Embedded Files
July 2025
Our paper "Emergence of Meron Kekulé lattices in twisted Néel antiferromagnets" in collaboration with Kyoung-Min Kim at APCTP has been published in npj Quantum Mater. 10, 68 (2025). This work reports the first example of Kekulé lattice structures composed of topological solitons, which has fundamental significance akin to those of the Abrikosov vortex lattice and the skyrmion lattice. Thanks for the nice collaboration, Kyoung-Min!
Our paper "Magnon thermal conductivity in multiferroics with spin cycloids" in collaboration with the Ramesh group at UC Berkeley and Rice and many others has been published in PRB. Thanks to all for the nice collaboration!
June 2025
Our paper "Scalar spin chirality Nernst effect" in collaboration with Nanse Esaki at the University of Tokyo and Yaroslav Tserkovnyak at UCLA has been published in Phys. Rev. Research 7, L022066 (2025). The scalar spin chirality, the most elementary unit of noncoplanar spin structures, is known as the source of various chiral transports of electrons, magnons, and phonons, underpinning one of the main themes of modern condensed matter physics. However, the transport of SSC itself has never been discussed before. Our work considers the transport properties of SSC for the first time and predicts a fundamentally new type of intrinsic Hall effect. See the illustrative figure on the right.
May 2025
Seungho has successfully defended his PhD thesis! Congratulations, Dr. Lee!
April 2025
Our paper "Tunable ultrafast dynamics of antiferromagnetic vortices in nanoscale dots" in collaboration with Ji Zou, , Even Thingstad, Jelena Klinovaja, and Daniel Loss at the University of Basel has been published in Physical Review Research! This work proposes a versatile means to obtain stable nano-sized antiferromagnetic vortex disks by exploiting the interfacial DMI. Thanks, all, for the nice work!
Our paper "Thermal magnetoresistance from magnon scattering from a domain wall in an antiferromagnetic insulator" in collaboration with Ehsan Faridi at the University of Missouri and Giovanni Vignale at NUS has been published in Applied Physics Letters!
Our paper "Non-Abelian Gauge Theory for Magnons in Topologically Textured Frustrated Magnets" in collaboration with Ricardo has been published in PRL! In this work, we have predicted the QCD-like dynamics of three-flavored magnons in textured frustrated magnets (see the right figure for the schematics).
Our paper "Terahertz Magnon Excitations and Switching in Non-Collinear Antiferromagnets" has been published in PRB.
March 2025
Here are talks about our works at the 2025 APS Global Physics Summit:
Our paper "Intersublattice entanglement entropy of ferrimagnetic spin chains" has been published in PRB. Here, the entanglement entropy of ferrimagnetic spin chains is theoretically studied for the first time by analytical and numerical means (DMRG). The first author of the paper, Jongmin, is under military service. Congratulations, Jongmin!
Our paper "Intrinsic Nernst effect of the magnon orbital moment in a honeycomb ferromagnet" has been published in PRB. Congratulations, Daehyeon!
January 2025
Our paper "Symmetry-Based Phenomenological Model for Magnon Transport in a Multiferroic" in collaboration with the Ramesh group at Rice University and UC Berkeley has been published in PRL. Thanks for the nice collaboration!
Our paper "Giant Modulation of Magnetoresistance in a Van Der Waals Magnet by In-Plane Current Injection" in collaboration with Sanghoon Kim at the University of Ulsan, Tae-Eon Park at KIST, and Kyoung-Whan Kim at Yonsei University has been published in Advanced Materials. This work reports the first discovery of the current-induced magnetic phase transition in van der Waals magnets, Fe5GeTE2, via observing the giant magnetoresistance. Thanks for the remarkable collaboration!
Our paper "Signatures of longitudinal spin pumping in a magnetic phase transition" has been published in Nature! This is the first experimental report of so-called quantum spin pumping! Thanks for the nice collaboration!
November 2024
Our paper "Magnetic control of phonon transport in magnetic insulator thulium iron garnet" in collaboration with Kab-Jin Kim at KAIST and Jong-Ryul Jeong at CNU has been published in Commun. Mater. 5, 243 (2024). Thanks for the nice collaboration!
Our paper "Spin Waves Near the Magnetization Compensation Temperature in Ferrimagnets Subjected to an External Field" has been published in J. Kor. Mag. Soc. 34, 201 (2024).
October 2024
Our paper "Exchange striction induced thermal Hall effect in the van der Waals antiferromagnet MnPS3" in collaboration with Je-Geun Park's group at SNU has been published in Phys. Rev. B 110, 165147 (2024). Thanks for the nice collaboration!
Our paper "Control of spin-wave polarity and velocity using a ferrimagnetic domain wall" has been published in Phys. Rev. Research 6, 043047 (2024). Thanks for the nice collaboration, Giovanni and Ehsan!
September 2024
Our paper "Enhancing spin pumping by nonlocal manipulation of magnon temperature" in collaboration with Jong-Ryul Jeong at Chungnam National University and Hyungyu Jin at POSTECH has been published in Matters. In this work, we report the discovery that modulating the magnon temperature in the FMI leads to significantly enhanced spin pumping. The modulation is achieved by careful interfacial engineering via a nanoscale thermal fin structure that strengthens the energy exchange between magnons and phonons across interfaces. Our discovery provides a versatile thermal route to manipulate the magnon spin current and may contribute to developing practical magnonic devices. Thanks for the nice collaboration!
July 2024
Our paper "Designed spin-texture-lattice to control anisotropic magnon transport in antiferromagnets" in collaboration with Ramamoorthy Ramesh at UC Berkeley has been published in Advanced Materials! This work has experimentally investigated the intriguing intertwining of ferroelectric and antiferromagnetic order. Thanks for the nice collaboration!
Our paper "Real-time observation of coherent spin wave handedness" in collaboration with Prof. Byung Cheol Park at SKKU has been published in npj Spintronics! Thanks for the nice collaboration!
Our Editorial for the Special Issue on Solitons in Quantum Physics in JPCM "Special Issue on Solitons in Quantum Physics" has been published! The special issue consists of 10 papers from various institutions, where diverse physics of solitons can be found. Thanks, Suk Bum, Egor, and Jiadong, for organizing the special issue. Also, I would like to thank Je-Geun Park at SNU for inviting us to organize the special issue.
May 2024
Our paper "Topological magnon-polarons in honeycomb antiferromagnets with spin-flop transition" in collaboration with Je-Geun Park at Seoul National University has been published in Phys. Rev. B 109, 184435 (2024). Thanks for the nice collaboration!
Our paper "Intrinsic Magnon Orbital Hall Effect in Honeycomb Antiferromagnets" in collaboration with Hyun-Woo Lee at POSTECH has been published in Nano Lett. (2024). In this work, the novel orbital Hall effect of magnons has been theoretically predicted in honeycomb antiferromagnets for the first time.
March 2024
Here are talks about our works at the 2024 APS March meeting:
January 2024
Our paper "Tunable domain-wall skyrmion Hall effect driven by a current and a magnetic field" in collaboration with Soong-Geun Je at Chonnam National University has been published in Physical Review B! This work studies the dynamics of a domain-wall skyrmion by a current and an external magnetic field for the first time.
Prof. Se Kwon Kim has been selected as one of the 2024 Outstanding Referees of the Physical Review journals by the American Physical Society (APS). Instituted in 2008, the Outstanding Referee program annually recognizes approximately 150 of the currently active, approximately 90,000, referees for their invaluable work. According to the APS website, this is a lifetime award like Fellowship in the APS.
December 2023
Our paper "Emergence of Stable Meron Quartets in Twisted Magnets" in collaboration with Kyoung-Min Kim at PCS-IBS and Moon Jip Park at Hanyang University has been published in Nano Letters! This paper reports the first theoretical prediction of stable meron quartets in twisted ferromagnets.
October 2023
Our paper "Current-driven motion of magnetic topological defects in ferromagnetic superconductors" in collaboration with Suk Bum at UOS has been published in PRB! This paper addresses the charge and spin dynamics of ferromagnetic superconductors and reports several novel topological phenomena associated with the dynamics of topological defects such as domain walls and vortices.
Our research on ferrimagnetic spintronics has been selected as 2023년 국가연구개발 우수성과 100선! Thanks all for the dedicated and excellent work!
September 2023
Our paper "Phase slip from weak links formed in artificially-stacked NbSe2" in collaboration with Prof. Heejun Yang has been published in 2D Mater. 10, 041001 (2023)! This is the first experimental paper on superconductors from our group! Thanks for the nice collaboration, Prof. Yang!
Dr. Durga Prasad Goli has joined our group! Welcome, Dr. Goli!
The international workshop "Quantum Magnonic Hybrid Systems 2023" organized by Se Kwon Kim (KAIST), Kab-Jin Kim (KAIST), Junho Suh (POSTECH), and Takehito Yokoyama (Tokyo Institute of Technology) will be held on September 14, 2023. The details of the workshop can be found on the website: https://sites.google.com/view/qmhs2023.
August 2023
Our paper "Grasping through dynamic weaving with entangled closed loops" in collaboration with Dr. Kahye Song at KIST and Prof. Dae-Young Lee in the Department of Aerospace Engineering at KAIST has been published in Nature Communications! This paper is about a soft gripper with a novel mechanism based on vortex-related topological protection. This illustrates the universality of the topological protection discussed for many decades in physics. Thanks for the nice collaboration for all co-authors!
June 2023
The international workshop "Condensed Matter Solitons 2023" organized by Se Kwon Kim (KAIST), Suk Bum Chung (University of Seoul), Moon Jip Park (IBS-PCS), Yong-il Shin (SNU), and Jee-Hoon Kim (POSTECH) will be held in 06/28/2023 - 06/30/2023. The details of the workshop can be found on the website: https://pcs.ibs.re.kr/PCS_Workshops/PCS_CMS_Home_2023.html. In this workshop, we have invited theoretical and experimental experts across the world on the novel phenomena in quantum materials including, but not limited to, magnets, superfluids, superconductors, and multiferroics. We aim to share the cutting-edge research developments in the related field and discuss the universal physics of topological soliton.
May 2023
Our paper "Magnon dynamics in a skyrmion-textured domain wall of antiferromagnets" has been published in PRB as an Editors' Suggestion. Congratulations, Seungho! Also, many thanks to Oleg and Kouki for the nice collaboration!
April 2023
Our paper "Electronic manipulation of magnon topology by chirality injection from boundaries" has been published in PRB. Congratulations, Seunghun and Gyungchoon!
March 2023
Our paper "Interaction of gapless spin waves and a domain wall in an easy-cone ferromagnet" has been published in PRB. Congratulations, Wooyon!
Our paper "Superfluidlike spin transport in the dynamic states of easy-axis magnets" has been published in PRB. Congratulations, Jongpil!
Here are talks about our works at the 2023 APS March meeting:
B57.00001 Giovanni Vignale - Atomically sharp domain walls as antiferromagnetic spin wave polarizers (Presenter: Giovanni Vignale)
B57.00005 Topological magnons (Presenter: Se Kwon Kim)
B57.00006 Tunable topology of magnon-polarons in two-dimensional magnets (Presenter: Gyungchoon Go)
B57.00007 Phase transition in magnon bands in a honeycomb ferromagnet driven by sublattice symmetry breaking (Presenter: Hongseok Kim)
B57.00013 Magnon heat transport in an antiferromagnetic insulator (Presenter: Ehsan Faridi)
D22.00011 Current driven motion of magnetic topological defect in ferromagnetic superconductor (Presenter: Suk Bum Chung)
M55.00005 Magnon dynamics in a Skyrmion-textured domain wall of antiferromagnets (Presenter: Seungho Lee)
W54.00010 Topological charge-dependent motion of the emergent magnetic monopole in soft magnetic elements (Presenter: Hee-Sung Han)
February 2023
Our paper "Mechanics of a ferromagnetic soliton" has been published in JPCM! See the illustrative figure on the right. Thanks for the great collaboration, Oleg!
Our paper "Scattering and Goos–Hänchen shift of antiferromagnetic spin waves under the spatial change of exchange interaction" has been published in JMMM! Thanks Geun-Hee Lee and Kab-Jin Kim!
December 2022
Our research on magnon orbitronics will be supported by Samsung Science & Technology Foundation. See the foundation webpage for the project description.
November 2022
Our paper "An alternative understanding of the skyrmion Hall effect based on one-dimensional domain wall motion" has been published in Applied Physics Express! Thanks for the nice collaboration, Soong-Geun at Chonnam National University and Chanyong and Kyoung-Woong at KRISS!
October 2022
Our paper "Fractalized magnon transport on a quasicrystal with enhanced stability" has been published in PRB. Thanks for the nice collaboration, Junmo and SungBin!
September 2022
Our paper "Topological phase transition in magnon bands in a honeycomb ferromagnet driven by sublattice symmetry breaking" has been published in PRB. Congratulations, Hongseok!
Our paper "Tunable large spin Nernst effect in a two-dimensional magnetic bilayer" has been published in PRB!
The paper "Atomic-scale spin-wave polarizer based on a sharp antiferromagnetic domain wall" in collaboration with Giovanni and Ehsan at the University of Missouri has been published in PRB! Thanks for the nice collaboration!
May 2022
The paper "Violation of the magnonic Wiedemann-Franz law in the strong nonlinear regime" in collaboration with Kouki Nakata and Yuichi Ohnuma at the Advanced Science Research Center in Japan has been published in PRB. Thanks for the nice collaboration!
April 2022
The international workshop "Condensed Matter Solitons 2022" organized by Se Kwon Kim (KAIST), Suk Bum Chung (University of Seoul), Moon Jip Park (IBS-PCS), Yong-il Shin (SNU), and Jee-Hoon Kim (POSTECH) will be held in 06/29/2022 - 07/01/2022. The details of the workshop can be found on the website: https://pcs.ibs.re.kr/PCS_Workshops/PCS_CMS_Home.html.
Our paper "Generation of nonreciprocity in gapless spin waves by chirality injection" has been published in Physical Review B! Thanks for the nice work, Gyungchoon and Seunghun!
Our paper "Generation of magnon orbital angular momentum by a Skyrmion-textured domain wall in a ferromagnetic nanotube" has been published in Frontiers in Physics. Congratulations, Seungho!
March 2022
Here are talks about our works at 2022 APS March meeting:
A54.00006 Atomic-Scale Spin-Wave Polarizer Based on a Sharp Antiferromagnetic Domain Wall (Presenter: Ehsan Faridi)
B52.00011 Generation of Nonreciprocity of Gapless Spin Waves by Chirality Injection (Presenter: Gyungchoon Go)
T00.00206 Interaction of gapless spin waves and a domain wall in an easy-cone ferromagnet (Presenter: Wooyon Kim)
W54.00009 Orbital angular momentum of a domain wall and geometrically twisted magnons (Presenter: Seungho Lee)
Z54.00013 The domain-wall motion driven by a rotating field in a ferrimagnet (Presenter: Munsu Jin)
January 2022
The paper "Berezinskii-Kosterlitz-Thouless transition transport in spin-triplet superconductor" in collaboration with Suk Bum Chung at the University of Seoul has been published in SciPost Physics Core!
The paper "Survey of temperature dependence of the damping parameter in the ferrimagnet Gd3Fe5O12" in collaboration with Qiming Shao at HKUST has been published in IEEE Transactions on Magnetics. Thanks for the excellent collaboration!
December 2021
The review paper "Ferrimagnetic spintronics" in collaboration with Geoffrey S. D. Beach at MIT, Kyung-Jin Lee at KAIST, Teruo Ono at Kyoto University, Theo Rasing at Radboud University, and Hyunsoo Yang at NUS has been published in Nature Materials. Thanks for the wonderful collaborations! See the Editorial "New horizons in spintronics" for the perspective on the work.
Seungho has won the Best Poster Presentation Award at ICAMD 2021! Congratulations, Seungho!
November 2021
Munsu published his first paper, "Domain-wall motion driven by a rotating field in a ferrimagnet," in PRB! Congratulations, Munsu!
The paper "Tunable magnonic cavity analogous to Fabry–Pérot interferometer" has been published in Applied Physics Letters!
October 2021
The paper "Superluminal-like magnon propagation in antiferromagnetic NiO at nanoscale distances" in collaboration with Kyung-Jin Lee at KAIST and Hyunsoo Yang at NUS has been published in Nature Nanotechnology!
The experimental paper "Temperature dependence of intrinsic and extrinsic contributions to anisotropic magnetoresistance," a result of the collaboration between KAIST and KBSI, has been published in Scientific Reports!
Seungho published his first paper, "Orbital angular momentum and current-induced motion of a topologically textured domain wall in a ferromagnetic nanotube" in PRB as a Letter! Congratulations, Seungho!
The paper "Interface Engineering of Magnetic Anisotropy in van der Waals Ferromagnet-based Heterostructures" in collaboration with Tae-Eon Park and Hyun Cheol Koo at KIST along with excellent researchers at KIST, UNIST, and Sungkyunkwan University has been published in ACS Nano. See the right figure for the illustration. Thanks for the wonderful collaboration!
July 2021
The workshop "Solitons in Condensed Matter 2021" organized by Suk Bum Chung (University of Seoul), Jung Hoon Han (Sungkyunkwan University), and Se Kwon Kim (KAIST) is held on July 1st-2nd. The details of the workshop can be found on the website (https://sites.google.com/view/scm-2021/home).
May 2021
The paper "Topological Hall Effects of Magnons in Ferrimagnets" in collaboration with Kouki Nakata at Japan Atomic Energy Agency in Japan has been published in the Journal of the Physical Society!
Hongseok Kim, Junsung Kim, and Jongpil Yun joined our group! Welcome!
April 2021
Dr. Gyungchoon Go joined our group! Welcome!
March 2021
The paper "Transport signature of the magnetic Berezinskii-Kosterlitz-Thouless transition" in collaboration with Suk-Bum Chung at the University of Seoul has been published in SciPost Physics! SciPost is purely online-based, run by professional scientists, and offers freely, openly, globally and perpetually accessible science. It aims at a transparent refereeing process: Both referees' reports and authors' responses for all the papers in the SciPost journals are public. Consider submitting your manuscript to SciPost!
Prof. Se Kwon Kim chaired "Session R38: Magnon Spin Current and Transport" at the APS March Meeting 2021.
February 2021
The paper "Direct Observation of Fe-Ge Ordering in Fe5−xGeTe2 Crystals and Resultant Helimagnetism" in collaboration with the University of Ulsan, KBSI, KIST, Sungkyunkwan University, KAERI, DGIST has been published in Advanced Functional Materials!
January 2021
"Current-induced spin-wave Doppler shift and attenuation in compensated ferrimagnets" has been published in Physical Review B.
The paper "Unconventional magnetoresistance induced by sperimagnetism in GdFeCo" in collaboration with Kyoto University, University of Ulsan, Chungnam National University, KBSI, Nihon University has been published in Physical Review B.
December 2020
The paper "Quantum hydrodynamics of spin winding" in collaboration with UCLA and CUNY has been published in Physical Review B.
The paper "Relativistic kinematics of a magnetic soliton" in collaboration with MIT and KAIST has been published in Science. See also the perspective "A new spin on special relativity" in Science.
November 2020
Our paper "Magnetic soliton rectifier via phase synchronization," a result of collaboration with KIST, Kyoto University, Korea University, Seoul National University, and KAIST, has been published in Physical Review B!
Our paper "Control of the Half‐Skyrmion Hall Effect and Its Application to Adder–Subtractor," a result of collaboration with multiplet institutions including KRISS, Hanyang University, KIST, Tokyo University, and KAIST, has been published in Advanced Quantum Technologies! Thanks for the nice collaboration.
October 2020
Wooyoun Kim, Seung Ho Lee, and Munsu Jin, gradudate students at KAIST, joined our group! Welcome!
July 2020
Our paper "The dynamics of a domain wall in ferrimagnets driven by spin-transfer torque," a result of collaboration of multiple institutions including Korea University, KIST, KRISS, and KAIST, has been published in Journal of Magnetism and Magnetic Materials! Thanks for the nice collaboration.
Our paper "Enhanced Magnon-Photon Coupling at the Angular Momentum Compensation Point of Ferrimagnets" in collaboration with Kyung-Jin Lee at Korea University has been published in Physical Review Letters! Thanks for the nice collaboration!
June 2020
Our paper "Distinct handedness of spin wave across the compensation temperatures of ferrimagnets" with Chanyong Hwang at KRISS and Kab-Jin Kim at KAIST has been published in Nature Materials! Thanks for the nice collaboration!
The paper "Driving a magnetized domain wall in an antiferromagnet by magnons" with Pengtao Shen and Yaroslav Tserkovnyak has been published in Journal of Applied Physics as a part of the special topic on Antiferromagnetic Spintronics!
Our group has moved to KAIST!
April 2020
The paper "Realization of Su-Schrieffer-Heeger states based on metamaterials of magnetic solitons" in collaboration with Gyungchoon Go and Kyung-Jin Lee at Korea University has been published in Physical Review B!
The paper "SU(3) Topology of Magnon-Phonon Hybridization in 2D Antiferromagnets" in collaboration with Suzy Zhang at UCLA, and Gyungchoon Go and Kyung-Jin Lee at Korea University has been published in Physical Review Letters. Thanks for the nice collaboration!
March 2020
Our paper "Magnetic field control of topological magnon-polaron bands in two-dimensional ferromagnets" has been published in Physical Review B. Congratulations, Pengtao!
The paper "Direct Demonstration of Topological Stability of Magnetic Skyrmions via Topology Manipulation" in collaboration with Soong-Geun Je at Chonnam National University, Mi-Young Im at Lawrence Berkeley National Laboratory, and Jung-Il Hong at DGIST has been published in ACS Nano. Thanks for the nice collaboration!
Here are talks about our works at 2020 APS March meeting in Denver:
(invited) B42.00004 Theory for the unconventional dynamics of ferrimagnets, Presenter: Se Kwon Kim
B59.00004 Magnetic field control of topological magnon-polaron bands in two-dimensional ferromagnets, Presenter: Pengtao Shen
F47.00010 Tuning entanglement by squeezing magnons in anisotropic magnets, Presenter: Ji Zou
M47.00001 Domain wall dynamics in metallic and insulating ferrimagnets, Presenter: Lucas Caretta
W41.00014 Transport signature of the BKT transition in 2D easy-plane magnets, Presenter: Suk Bum Chung
February 2020
The paper “Creating a 100-nm-scale zero-field skyrmion in exchange-biased multilayers through X-ray illumination" in collaboration with Guoqiang Yu at Chinese Academy of Sciences has been published in Nature Communications. Thanks for the nice collaboration!
January 2020
Our News & Views paper "Fast and efficient switching with ferrimagnets" has been published in Nature Electronics! It highlights the recent report "Ultrafast and energy-efficient spin–orbit torque switching in compensated ferrimagnets" by Hyunsoo Yang at NUS and his colleagues published in Nature Electronics.
Our paper "Tuning entanglement by squeezing magnons in anisotropic magnets" has been published in Physical Review B and selected as an Editors' Suggestion! Thanks for the nice collaboration, Ji and Yaroslav. We are moving toward spin-based quantum computation!
December 2019
Our paper "Magnon-Phonon Hybrid Excitations in Square-Lattice Ferromagnets with tunable Chern numbers" in collaboration with Gyungchoon Go and Kyung-Jin Lee at Korea University has been published in Physical Review Letters! Magnon polarons are becoming topological!
November 2019
Our paper "Bidirectional spin-wave-driven domain wall motion in antiferromagnetically coupled ferrimagnets" in collaboration with Se-Hyeok Oh and Kyung-Jin Lee at Korea University and Jiang Xiao at Fudan University has been published in Physical Review B! Thanks for the nice collaboration!
October 2019
Our paper "Electrical manipulation of spin pumping signal through nonlocal thermal magnon transport" in collaboration with Yabin Fan and Luqiao Liu at MIT has been published in Applied Physics Letters! Thanks for the nice collaboration!
September 2019
Our paper "Spin-transfer torques for domain wall motion in antiferromagnetically coupled ferrimagnets" has been published in Nature Electronics! Thanks for the nice collaboration! The research is highlighted in the article "A new twist for spin torques in antiferromagnets" in the same journal.
Our paper "Stabilization of the skyrmion crystal phase in thin-film antiferromagnets" has been published in Physical Review B as a Rapid Communication!
August 2019
The award of Young Investigator Grant of Prof. Se Kwon Kim at UKC2019 has been featured in the Maeil Business Newspaper (written in Korean).
Our paper "Temperature dependence of magnetic resonance in ferrimagnetic GdFeCo alloys" in collaboration with Teruo Ono's group in Kyoto University has been published in Applied Physics Express as a Letter. Thanks for the nice collaboration!
July 2019
The paper "Laser control of magnonic topological phases in antiferromagnets" with Kouki Nakata and Shintaro Takayoshi has been published in Physical Review B. Thanks for the nice collaboration!
June 2019
Prof. Se Kwon Kim joined the Editorial Board of Scientific Reports, an open access journal published by Nature Research!
The single-author paper "Dynamics of bimeron skyrmions in easy-plane magnets induced by a spin supercurrent" has been published in Physical Review B!
May 2019
The paper with Qiming "Topological Hall effect at above room temperature in heterostructures composed of a magnetic insulator and a heavy metal" has been published in Nature Electronics! This research is highlighted in the article "Skyrmions in magnetic insulators warm up" in the same journal by Chun-Yeol You at DGIST in South Korea.
Our paper "Topological transport of vorticity in Heisenberg magnets" with Ji Zou (a graduate student at UCLA) and Yaroslav Tserkovnyak has been published in PRB as a Rapid Communication. Congratulation for your nice paper, Ji!
April 2019
Prof. Se Kwon Kim has been awarded 2019 Young Investigator Grant (YIG) for Science from Korean-American Scientists and Engineers Association (KSEA)! The proposed research program is Superfluid-Inspired Spin Transport with Minimal Dissipation in Magnetic Materials.
March 2019
Our paper "Low magnetic damping of ferrimagnetic GdFeCo alloys" has been accepted for Physical Review Letters. This experimental work address the magnetic damping of GdFeCo, a ferromagnet with the angular momentum compensation temperature where the net angular momentum vanishes. By refuting the previous belief that the magnetic damping of the material diverges at the compensation temperature, we showed that in fact the magnetic damping is small and almost independent of temperature in a wide range spanning the compensation temperature.
Here are talks about our works at 2019 APS March meeting in Boston:
F41.00003 : Nonlocal Spin Transport Mediated by a Vortex Liquid in Superconductors, Presenter: Se Kwon Kim, Time: 12:03 PM, Tuesday, March 5, 2019
K39.00010 : Topological Transport of Vorticity in Heisenberg Magnets, Presenter: Ji Zou, Time: 10:12 AM, Wednesday, March 6, 2019
K41.00007 : Transport signatures of interfacial exchange coupling and chiral spin textures in magnetic insulator thin films, Presenter: Qiming Shao, Time: 9:36 AM, Wednesday, March 6, 2019
January 2019
Our paper "Vanishing skyrmion Hall effect at the angular momentum compensation temperature of a ferrimagnet" has been published in Nature Nanotechnology. This work reports the first experimental observation of vanishing of the spin Hall angle in antiferromagnetically-coupled systems, confirming our theoretical prediction.
Our paper "Domain wall dynamics in easy-cone magnets" has been published in Physical Review B. This work is on the dynamics of a domain wall in easy-cone magnets, which are induced by an external field, spin-transfer torque, spin superfluid. Both analytical and numerical techniques are used for the research.
Our paper "Tunable Magnonic Thermal Hall Effect in Skyrmion Crystal Phases of Ferrimagnets" has been accepted for publication in Physical Review Letters. This work presents a new theory for magnon transport in topological spin-textured ferrimagnets that can include ferromagnets and antiferromagnets as two special cases and shows that the unique tunability of ferrimagnets leads to the new control of magnon transport therein.
September 2018
Our paper "Nonlocal Spin Transport Mediated by a Vortex Liquid in Superconductors" has been accepted for publication in Phys. Rev. Lett. It has been selected as an Editors' Suggestion also Featured in Physics. This work proposes using a superconducting vortex liquid as a robust spin-transport channel. Reciprocally, spin-transport measurements are shown to be able to provide hitherto unaccessible information about an elusive vortex-liquid phase.
Our paper "Cooper-Pair Spin Current in a Strontium Ruthenate Heterostructure" has been accepted for publication in Phys. Rev. Lett. This work exemplifies the promising future research direction, exploring strongly correlated systems by spin-transport measurements.
August 2018
Our paper “Role of dimensional crossover on spin-orbit torque efficiency in magnetic insulator thin films" has been accepted for publication in Nature Communications. Congratulation, Qiming!
June 2018
Our paper "Spin-torque-biased magnetic strip: Nonequilibrium phase diagram and relation to long Josephson junctions" has been accepted for publication in PRL. Congratulation, Daniel!
May 2018
Our paper, "Magnon-induced non-Markovian friction of a domain wall in a ferromagnet," which is coauthored by Yaroslav, Oleg, and Victor, has been published in PRB. Thanks for the nice collaboration!
March 2018
Here are talks about our works at 2018 APS March meeting in Los Angeles:
S19.00008 Chiral Edge Mode in the Coupled Dynamics of Magnetic Solitons in a Honeycomb Lattice, Presenter: Se Kwon Kim
K13.00006 Cooper pair spin current in SrRuO3 / Sr2RuO4 heterostructure, Presenter: Suk Bum Chung
L22.00007 Superfluid-inspired spintronics, Presenter: Pramey Upadhyaya
P22.00010 Novel perspectives for the control of antiferromagnetic solitons, Presenter: Ricardo Zarzuela
Y21.00014 Anisotropic Spin-Superfluid Magnet as a Long Josephson Junction, Presenter: Daniel Hill
L22.00004 (invited talk) Fast domain wall motion induced by antiferromagnetic spin dynamics at the angular momentum compensation temperature of ferrimagnets, Presenter: Kab-Jin Kim
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