News

[25.12.17] Dr. Sun-Woo Kim from the University of Cambridge visited us and gave a talk.  (Talk title: Loop current orders in Kagome metals)

[25.12.08] JWR gave a talk at ICAMD. (Talk title: Topological protection by local support symmetry and destructive interference)

[25.12.05] JWR gave a talk at IAS-Asia Pacific Workshop: Frontiers in Quantum Matter. (Talk title: Topological protection by local support symmetry and destructive interference)

[25.11.25] JWR gave a talk at Sungkyunkwan University (성균 물리인 워크숍). (Talk title: Compact localization and quantum geometry)

[25.11.21] Dr. Sourav Chakraborty's work "Combined effect of site dilution and long-range interactions in the Hubbard model: Towards the design of antiferromagnetic half-metallicity" has been published in Phys. Rev. B 112, 205113.

[25.08.12] Our paper "Enhancing van-Hove singularities in SrRuO3 films by vacancy engineering" is published in Physica Status Solidi RRL.

[25.05.09] Gwangil Baek joined our group as a visiting graduate student. Welcome!

[25.05.07] JWR gave a talk at Hanyang University. (Talk title: Novel transport phenomena driven by quantum distance)

[25.04.29] A baby boy was born to Dr. Chakraborty! Congrats!

[25.04.23] JWR gave a talk at KPS Spring Meeting. (Talk title: Novel transport phenomena driven by quantum distance)

[25.04.21] JWR gave a talk at CALDES, POSTECH. (Talk title: Novel transport phenomena driven by quantum distance)

[25.03.11] JWR gave a talk at DGIST. (Talk title: Novel transport phenomena driven by quantum distance)

[25.02.24] Dr. Sun-Woo Kim from the University of Cambridge visited us and gave a talk.  (Talk title: Charge density waves in Kagome materials)

[25.02.20] Dr. Makoto Shimizu from Kyoto University visited us and gave a talk. (Talk title: Electronic structure of a spin-triplet superconductor UTe2 under pressure)

[25.02.06] JWR gave a talk at K-QMS. (Talk title: Novel transport phenomena driven by quantum distance)

[25.01.15]  Our paper "Nonlinear electromagnetic response for Hall effect in time-reversal breaking materials" is accepted by New Journal of Physics.

[24.12.16] Chang-geun Oh gave a talk on the quantum geometry in solid state physics.

[24.11.28] Dr. Sourav Chakraborty joined our group as a PostDoc. Welcome!

[24.11.19] Our paper "Thermoelectric Transport Driven by Quantum Distance" is published in Advanced Science.

[24.11.08] Sang-hoon Han returned after visiting the University of Cambridge for two weeks.

[24.11.06] Prof. Gun-Do Lee from Seoul National University visited us and gave a talk.

[24.10.25] JWR gave a talk at KPS Fall Meeting (Talk title: Compact localized states and quantum geometry)

[24.10.24] Moonhyoung Lee had a poster presentation at KPS Fall Meeting (Talk title: Enhancing van-Hove singularities in SrRuO3 films by vacancy engineering)

[24.10.14] Dr. Sun-Woo Kim from the University of Cambridge visited us and gave a talk.

[24.10.04] Jung Gu Choi from POSTECH visited us.

[24.10.02] Professor Sejoong Kim from UST visited us.

[24.09.10] Our paper "Atomically thin two-dimensional Kagome flat band on silicon surface" is published in ACS Nano.

[24.09.04] JWR gave a talk at G-Lamp workshop. (Talk title: Symmetry and destructive interference in two-dimensional systems)

[24.08.13] Hyeongseop Kim gave a poster presentation at BK21 & G-Lamp joint workshop and won the excellent poster award. (Poster title: General construction scheme for geometrically nontrivial flat band models)

[24.08.13] JWR gave a talk at BK21 & G-Lamp joint workshop. (Talk title: Quasi-localization and Wannier obstruction in partially flat bands)

[24.07.20] Our paper "An unconventional platform for two-dimensional Kagome flat bands on semiconductor surfaces" is accepted by Nano Letters.

[24.06.05] Our paper "Quasi-localization and Wannier obstruction in partially flat bands" is published in Communications Physics.

[24.05.30] JWR gave a talk at the Intercontinental Binodal Workshop on Flat Bands and high-order Van Hove singularities. (Talk title: Quasi-localization and Wannier obstruction in partially flat bands)

[24.05.08] Our work "Engineering two-dimensional nodal semimetals in functionalized biphenylene by fluorine adatoms" has been published in the press. LINK

[24.05.02] Sang-hoon Han gave a talk at the Korean Energy Society Spring Meeting. (Talk title: Revealing inverted chirality of hidden domain wall states in multiband systems without topological transitions)

[24.04.30] We moved to the new office.

[24.04.10] Our paper "Engineering two-dimensional nodal semimetals in functionalized biphenylene by fluorine atoms" is accepted by Nano Letters.

[24.04.05] Jin-Hong Park gave a talk at the regular seminar of the NEQuA (Talk title: Tunable Colossal Anomalous Hall Conductivity in Half‐Metallic Material Induced by d‐Wave‐Like Spin‐Orbit Gap)

[24.03.22] Our paper "Tunable Colossal Anomalous Hall Conductivity in Half‐Metallic Material Induced by d‐Wave‐Like Spin‐Orbit Gap" is published in Advanced Science.

[24.03.11] Sanghwa Lee joined our group as an undergraduate intern. Welcome!

[24.03.01] Dr. Sang-hoon Han joined our group as a PostDoc. Welcome!

[24.02.28] Junseop Lee and Insu Oh left our group.

[24.01.22] JWR gave a talk at the Workshop on strong correlation and Dos singularity. (Talk title: Topological phases protected by local support symmetries)

[24.01.11] Our paper "Low-frequency noise behaviors of quasi-two-dimensional electron systems based on complex oxide heterostructures" is published in Current Applied Physics.

[24.01.05] JWR gave a talk at Yosei University. (Talk title: Quantum distance in solid-state physics)

[24.01.03] Dr. Taekoo Oh from RIKEN visited us and gave a talk. (Talk title: Exotic transport phenomena in strongly correlated systems)

[23.12.31] Dr. Anwei Zhang left our group and moved to the Shanghai Normal University as a faculty member. Congratulations!

[23.12.15] We are funded by NRF: Learning & Academic research institution for Master's-PhD students, and PostDocs.

[23.12.05] Jun Seop Lee gave a poster presentation at the class 'directed research in physics(물리학특수연구)' and was awarded the excellence award.

[23.12.04] Hyeongseop Kim had a poster presentation at ICAMD.

[23.11.29] JWR gave a talk at our department's seminar (Talk title: Topological edge modes and band-crossings from compact localized states)

[23.10.26] JWR gave a talk at KPS Autumn meeting (Talk title: Topological edge modes and band-crossings from compact localized states)

[23.10.20] JWR gave a talk at Workshop on Strongly Correlated Systems 2023 (Talk title: Topological edge modes and band-crossings from compact localized states)

[23.10.18] Our paper "General construction scheme for geometrically nontrivial flat band models" is published in Communications Physics.

[23.07.24] JWR gave a lecture at Summer Lectures on Quantum Matter and Quantum Information (Lecture title: Physics of flat bands)

[23.07.06] JWR gave a talk at SCES2023 (Talk title: Geometric aspects of flat bands with a singularity)

[23.05.19] Anwei Zhang gave a talk at the regular seminar of the NEQuA (Talk title: Nonlinear electromagnetic response for Hall effect in time-reversal breaking materials)

[23.05.10] JWR gave a talk at Hanyang University Colloquium (Talk title: Singular flat band)

[23.04.20] JWR gave a talk at KPS spring meeting. (Talk title: Bulk-boundary correspondence in flat band systems characterized by the quantum distance)

[23.03.15] Our paper "Topological flatband loop states in fractal-like photonic lattices" is published in Laser and photonics reviews.

[23.03.06] JWR gave a talk at APS March meeting. (Talk title: Bulk-interface correspondence from quantum distance in flat band systems)

[23.03.06] Hyeongseop Kim gave a talk at APS March meeting. (Talk title: Flat band construction scheme characterized by quantum distance)

[23.03.03] Donghyeok Heo left our group.

[23.02.20] Jaeuk Seo left our group and moved to KAIST. 

[23.02.18] JWR gave a talk at CCES regular seminar (Talk title: Geometric aspects of flat bands with a singularity)

[23.02.10] JWR gave a talk at Ajou-Chiba Joint Symposium (Talk title: Quantum geometry in flat band systems with singularities)

[23.02.07] JWR gave a talk at Quantum Materials Symposium 2023. (Talk title: Geometric aspects of flat bands with a singularity: from bulk to boundary)

[23.02.01] JWR gave a talk at Hanyang University. (Talk title: Bulk-boundary correspondence in flat band systems)

[23.01.09] Prof. Hoonkyung Lee and his graduate student Seongjun Mo visited us.

[23.01.06] Moon Hyoung Lee and Insu Oh joined our group as undergraduate interns.

[23.01.05] We are funded by Ajou University: 교내 일반연구비.

[22.12.27] Our paper "Flat bands in network superstructures of atomic chains" is published in Photonics.

[22.12.16] JWR gave a talk at UNIST. (Talk title: Singular flat bands)

[22.12.12] JWR gave a talk at the Focus workshop: topological quantum matter. (Talk title: Bulk-interface correspondence of flat bands with a band crossing)

[22.12.10] Our paper "Bulk-interface correspondence from quantum distance in flat band systems" is published in Communications Physics.

[22.12.09] JWR gave a talk at KAIST. (Talk title: Continuum analysis of singular flat bands)

[22.12.02] JWR gave a talk at the QND monthly seminar. (Talk title: Flat band construction schemes)

[22.12.02] Hyeongseop Kim gave a talk at the regular seminar of the NEQuA. (Talk title: Flat band construction scheme characterized by quantum distance)

[22.10.23] Chang-geun Oh left our group and moved to the University of Tokyo, Watanabe's group.

[22.10.21] Hyeongseop Kim gave a talk at the KPS Fall Meeting. (Talk title: Flat band construction scheme characterized by quantum distance)

[22.09.22] Chang-geun Oh had a poster presentation at IBS-APCTP Conference on Advances in The Physics of Topological and Correlated Matter. (Poster title: Bulk-boundary correspondence from quantum distance in flat band systems)

[22.09.21] Our paper "Bulk-interface correspondence from quantum distance in flat band systems" is accepted by Communications Physics.

[22.09.15] Donghyeok Heo joined our group as an undergraduate intern.

[22.08.23] Jun Beom Kim left our group and moved to Seoul City Hall. He won the Dean's Award for his academic excellence.

[22.07.30] Our paper "Geometric origin of intrinsic spin Hall effect in an inhomogeneous electric field" is published in Communications Physics.

[22.07.08] JWR gave a talk at the 전자계산구조 학회. (Talk title: Bulk-interface correspondence of flat band systems)

[22.07.01] Jin-Hong Park gave a talk at the regular seminar of the NEQuA (Talk title: Topological spin structure in the heavy fermion system CePtAl4Ge2)

[22.06.28] JWR gave a talk at OIST. (Talk title: Bulk-interface correspondence of flat band systems)

[22.06.27] Jun Beom Kim gave a poster presentation at the class 'directed research in physics(물리학특수연구)' (Poster title: Realization of nearly flat Chern band in Kagome lattice by applying a lateral magnetic field)

[22.06.27] Our paper "Geometric origin of intrinsic spin Hall effect in an inhomogeneous electric field" is accepted by Communications Physics.

[22.06.21] Dr. Daniel Leykam from NUS visited us and gave a talk. (Talk title: Topological machine learning)

[22.06.16] Jun Seop Lee joined our group as an undergraduate intern.

[22.06.10] JWR gave a talk at KIAS. (Talk title: Bulk-interface correspondence of flat band systems)

[22.06.01] Chang-geun Oh has finished his military service. Congratulations!

[22.05.27] Hyeongseop Kim had a poster presentation at BK21 Energy Research Presentation -BK21 에너지 연구 발표회- (Poster title: Flat band construction scheme characterized by quantum distance)

[22.05.25] JWR gave a talk at the CMPMEET2022. (Talk title: Novel geometric properties of flat band systems) 

[22.05.24] JWR was awarded the Research Excellence Award from Ajou University.

[22.04.28] Chang-geun Oh gave a talk at Hanyang University (Talk title: Bulk-interface correspondence from quantum distance in flat band systems)

[22.04.20] JWR gave a talk at the 2022 KPS Spring Meeting. (Talk title: Design of flat band systems) 

[22.04.01] Chang-geun Oh gave a talk at the regular seminar of the NEQuA (Talk title: Bulk-interface correspondence from quantum distance in flat band systems)

[22.03.14] Jun Beom Kim joined our group as an undergraduate intern.

[22.03.02] Dr. Jin-Hong Park joined our group as a PostDoc researcher.

[22.02.23] We are funded by Ajou University: 신진연구인력 지원사업.

[22.02.11] Jung Gu Choi left our group and moved to POSTECH

[22.01.20] JWR gave a talk at Mini-workshop on Topological Photonics and Beyond (Talk title: Quantum Geometry of Flat Band)

[22.01.12] Dr. Anwei Zhang's work "Relating the topology of Dirac Hamiltonians to quantum geometry: When the quantum metric dictates Chern numbers and winding numbers" has been published in SciPost Phys.. Link

[21.12.09] Our work "Geometric characterization of anomalous Landau levels of isolated flat bands" has been published in the press. LINK

[21.12.07] JWR gave a talk at ICAMD 2021 (Talk title: Novel geometric aspects in flat band systems)

[21.11.19] Anwei Zhang gave a talk at the regular seminar of the NEQuA (Talk title: Revealing Chern number from quantum metric)

[21.11.08] Our paper "Fractal-like photonic lattices and localized states arising from singular and nonsingular flatbands" is published in APL Photonics.

[21.11.05] Our paper "Geometric characterization of anomalous Landau levels of isolated flat bands" is published in Nature Communications.

[21.09.23] JWR gave a talk at Soongsil University seminar. (Talk title: Singular flat band)

[21.09.06] Jaeuk Seo joined our group as an undergraduate intern.

[21.09.03] Chang-geun Oh gave a talk at the regular seminar of the NEQuA (Talk title: Particle-antiparticle duality and fractionalization of symmetry protected chiral solitons in a generalized Jackiw-Rebbi model)

[21.08.24] Our paper "General construction of flat bands with and without band crossings based on wave function singularity" is published in Physical Review B.

[21.08.21] JWR gave a talk at Holography 2021: Quantum Matter, Information, and Spacetime. (Talk title: Novel geometric aspects in flat band systems)

[21.08.17] JWR gave a talk at IBS Conference on Flatbands: symmetries, disorder, interactions and thermalization. (Talk title: Novel geometric aspects in flat band systems)

[21.08.05] Our paper "Flat bands with band-crossing enforced by symmetry representation" is published in Physical Review B (Letter).

[21.08.01] Dr. Anwei Zhang joined our group as a PostDoc researcher.

[21.07.01] We are funded by SRC: Research Center for Novel Epitaxial Quantum Architectures (NEQuA: 선도연구센터: 신개념 에피성장 양자신소재 연구센터).

[21.06.22] Chang-geun Oh joined our group as a research fellow.

[21.06.08] Our paper "Wave-function geometry of band crossing points in two dimensions" is published in Physical Review B (Letter).

[21.05.21] We are funded by Ajou University: New Faculty Start-Up Grant (신임교원 정착연구).

[21.05.17] Our first office is cleaned and ready for use.

[21.05.04] JWR gave a talk at the SKKU seminar. (Talk title: Flat bands and the geometry of Bloch wave function)

[21.04.25] JWR joined the Advanced Study Group of IBS PCS.

[21.04.23] JWR gave a talk at the 2021 KPS Spring Meeting. (Talk title: Flat bands and the geometry of Bloch wave function) *Abstract book

[21.04.08] Our paper "Singular flat bands" is published in Advances in Physics: X.

[21.03.25] Hyeongseop Kim and Jung Gu Choi joined our group as undergraduate interns.

[21.02.19] We are funded by NRF: Mid-career Research Grant (중견 연구 과제).

 [20.12.07] Our homepage is open!