Publications

*Underline - major role & Bold - our members

1. Dongsheng Yang, Taeheon Kim, Kyusup Lee, Yakun Liu, Fei Wang, Chang Xu, Dushyant Kumar, & Hyunsoo Yang, “Spin-orbit torque manipulation of sub-terahertz magnons in antiferromagnetic α-Fe2O3”, accepted in Nat. Commun. (2024).

2. Kyusup Lee, Younghoon Kim, & Inseo Lee, “Ultrafast Spin Currents in Antiferromagnets Probed by THz Emission”, J. Kor. Mag. Soc. 34(2), 103-109 (2024).

3. Fei Wang, Guoyi Shi, Kyoung-Whan Kim, Hyeon-Jong Park , Jae Gwang Jang, Hui Ru Tan, Ming Lin, Yakun Liu, Taeheon Kim, Dongsheng Yang, Shishun Zhao, Kyusup Lee, Shuhan Yang, Anjan Soumyanarayanan, Kyung-Jin Lee, & Hyunsoo Yang, “Field-free switching of perpendicular magnetization by two-dimensional PtTe2/WTe2 van der Waals heterostructures with high spin Hall conductivity”, Nat. Mater. Publihsed online (2023).

4. Imane Berrai, Kyusup Lee, Mohamed Belmeguenai, Mingfang Cui, Wafa Alimi, Yves Roussigné, Samir Farhat, Hyunsoo Yang, & Salim Mourad Chérif, “Magnetic properties of CoFeB films grown on a single-layer graphene underlayer”, Phys. Rev. Maters. 8, 014410 (2024)

5. Qiyao Liu, Taeheon Kim, Kyusup Lee, Dongsheng Yang, Dushyant Kumar, Fanrui Hu and Hyunsoo Yang, “Dzyaloshinskii-Moriya Torque-Driven Resonance in Antiferromagnetic α-Fe2O3”, Adv. Funct. Mater. 2305173 (2023).

6. Dongsheng Yang, Wen Wen, Chang Xu, Kyusup Lee, Ting Yu, & Hyunsoo Yang, “Electrically Tunable Terahertz Resonance in Antiferromagnetic NiO/Pt Heterostructures”, Phys. Rev. Applied. 20, 014023 (2023).

7. Guoyi Shi, Fei Wang, Hui Ru Tan, Shishun Zhao, Yakun Liu, Dongsheng Yang, Kyusup Lee, Yuchen Pu, Shuhan Yang, Anjan Soumyanarayanan, & Hyunsoo Yang, “Room-temperature switching of perpendicular magnetization by magnon torques”, Phys. Rev. Appl. 19, 034039 (2023). 

8. Jiayun Liu, Kyusup Lee, Yingshu Yang, Ziqi Li, Raghav Sharma, Lifei Xi, Teddy Salim, Chris Boothroyd, Yeng Ming Lam, Hyunsoo Yang, Marco Battiato & Elbert E. M. Chia, “Spintronic terahertz emitters in silicon-based heterostructures”, Phys. Rev. Appl. 18, 034056 (2022). 

9. Kyusup Lee, Dongkyu Lee, Dongsheng Yang, Rahul Mishra, Dong-Jun Kim, Sheng Liu, Qihua Xiong, Se Kwon Kim, Kyung-Jin Lee & Hyunsoo Yang, “Superluminal-like magnon propagation in antiferromagnetic NiO at nanoscale distances”, Nat. Nanotechnol. 16(12), 1337-1341 (2021).

10. Shuyuan Shi, Jie Li, Chuang-Han Hsu, Kyusup Lee, Yi Wang, Li Yang, Junyong Wang, Qisheng Wang, Hao Wu, Wenfeng Zhang, Goki Eda, Gengchiau Liang, Haixin Chang & Hyunsoo Yang, “Observation of the out-of-plane polarized spin current from CVD grown WTe2”, Adv. Quantum Technol. 4(8), 2100038 (2021). 

11. Mengji Chen, Kyusup Lee, Jie Li, Liang Cheng, Qisheng Wang, Kaiming Cai, Elbert E. M. Chia, Haixin Chang & Hyunsoo Yang, “Anisotropic picosecond spin-photocurrent from Weyl semimetal WTe2”, ACS Nano 14(3), 3539-3545 (2020). 

12. Yi Wang, Dapeng Zhu, Yumeng Yang, Kyusup Lee, Rahul Mishra, kyungchoon Go, Se-Hyeok Oh, Dong-Hyun Kim, Kaiming Cai, Enlong Liu, Shawn D. Pollard, Shuyuan Shi, Jongmin Lee, Kie Leong Teo, Yihong Wu, Kyung-Jin Lee & Hyunsoo Yang, “Magnetization switching by magnon-mediated spin torque through an antiferromagnetic insulator”, Science 366(6469), 1125-1128 (2020). 

13. Kyusup Lee, Jie Li, Liang Cheng, Junyong Wang, Dushyant Kumar, Qisheng Wang, Mengji Chen, Yang Wu, Goki Eda, Elbert E. M. Chia, Haixin Chang & Hyunsoo Yang, “Sub-picosecond carrier dynamics induced by efficient charge transfer in MoTe2/WTe2 van der Waals heterostructures”, ACS Nano 13(8), 9587-9594 (2019). 

14. Mengji Chen, Yang Wu, Yang Liu, Kyusup Lee, Xuepeng Qiu, Pan He, Jiawei Yu, & Hyunsoo Yang, “Current‐enhanced broadband THz emission from spintronic devices”, Adv. Opt. Mater. 7, 1801608 (2019).

15. Mengji Chen, Rahul Mishra, Yang Wu, Kyusup Lee, & Hyunsoo Yang, “Terahertz emission from compensated magnetic heterostructures”, Adv. Opt. Mater. 6, 1800430 (2018).

16. Chang Woo Park, Ingu Lee, Seong-Hoon Kwon, Kyu-Sup Lee, Cheol Jo & Do-Kyeong Ko, “Authentication of adulterated edible oil using coherent anti-Stokes Raman scattering spectroscopy”, J. Raman Spectrosc. 48, 1330-1336 (2017).

17. Kyu-Sup Lee, Do-Kyeong Ko & Nan Ei Yu, “Temperature-dependent Sellmeier equation at terahertz frequency range for 1mol% MgO-doped stoichiometric lithium tantalite”, Jpn. J. Appl. Phys. 56, 040303 (2017).

18. Mun Seok Choe, Ashwini Sawant, Kyu-Sup Lee, Nan Ei Yu & Eun Mi Choi, “Measuring the carrier lifetime by using a quasi-optical millimeter- and THz-wave system”, Appl. Phys. Lett. 110, 074101 (2017).

19. Kyu-Sup Lee, Rira Kang, Byungwoo Son, Dong-Yu Kim, Nan Ei Yu & Do-Kyoeng Ko, “All-optical THz wave switching based on CH3NH3PbI3 perovskites”, Sci. Rep. 6, 37912 (2016).

20. J. W. Han, S. Y. Hamh, T. H. Kim, K.-S. Lee, N. E. Yu, D.-K. Ko & J. S. Lee, “Extraction of optical constants using multiple reflections in the terahertz emitter-sample hybrid structure”, Opt. Lett. 39, 5531-5534 (2014).

21. Kyu-Sup Lee, Do-Kyeong Ko, Shunji Takekawa, Kenji Kitamura & Nan Ei Yu, “Characterization of in-situ terahertz detection by optical interaction in a periodically poled stoichiometric lithium tantalate nonlinear crystal”, J. Infrared. Milli. Terahz. Waves 35, 833-839 (2014).

22. Nan Ei Yu, Myoung-Kyu Oh, Hoonsoo Kang, Changsoo Jung, Bok Hyeon Kim, Kyu-Sup Lee, Do-Kyeong Ko, Shunko Takekawa & Kenji Kitamura, “Continuous tuning of a narrow-band terahertz wave in periodically poled stoichiometric LiTaO3 crystal with a fan-out grating structure”, Appl. Phys. Express 7, 012101 (2014).

23. N. E. Yu, K.-S. Lee, D.-K. Ko, C. Kang, S. Takekawa & K. Kitamura, “Temperature dependent narrow-band terahertz pulse generation in periodically poled crystals via difference frequency generation”, Opt. Commun. 284, 1395-1400 (2011).

1. Kyusup Lee, " Accessing Ultrafast Antiferromagnetic Magnon Currents in Nanometric Thin Films with Terahertz Probes ", 2023 Korean Magnetics Society (KMS) Winter Conference, Busan, South Korea (2023). – Invited talk

2. Kyusup Lee, "Low-dissipation and ultrafast transport of antiferromagnetic magnons over nm-distances", KPS Fall meeting 2023, Changwon, South Korea (2023). – Invited talk

3. Kyusup Lee, "Ultrafast spin and magnon currents probed by THz emission in nanometric thin films", Spin Asia 2023, Chiang Mai, Thailand (2023). – Invited talk

4. Kyusup Lee, "Terahertz Spin and Magnon Transport in Magnetic Heterostructures", 2023 Korean Magnetic Society Summer Conference, Jeju, South Korea (2023). – Invited talk

5. Kyusup Lee, "Ultrafast spin-to-charge conversion probed by spintronic terahertz emission", The 22nd Advanced Lasers and Their Applications 2023, Jeju, South Korea (2023). – Invited talk

6. Kyusup Lee & Hyunsoo Yang, “THz Charge, Spin, and Magnon Currents in Magnetic Heterostructures”, The 7th International Conference on Electronic Materials and Nanotechnology for Green Environment (ENGE 2022), Jeju, South Korea (2022). – Invited talk

7. Kyusup Lee, Dongkyu Lee, Dongsheng Yang, Rahul Mishra, Se Kwon Kim, Kyung-Jin Lee & Hyunsoo Yang, “Superluminal propagation of antiferromagnetic magnons in nanometer-scale NiO”, APS March meeting 2022, Chicago, US (2022). – Invited talk

8. Kyusup Lee, Dongkyu Lee, Dongsheng Yang, Rahul Mishra, Se Kwon Kim, Kyung-Jin Lee & Hyunsoo Yang, “Accessing superluminal-like magnon velocity in an antiferromagnetic insulator”, 2022 Joint MMM-INTERMAG, New Orleans, US (2022). – Invited talk

9. Kyusup Lee & Hyunsoo Yang, “Exploring generation and transport of ps-long spin currents with terahertz probes”, Int. Conf. on Materials for Humanity (MH21), Singapore (2021). – Contributed talk

10. Kyusup Lee, Mengji Chen, Jie Li, Liang Cheng, Qisheng Wang, Kaiming Cai, Elbert E. M. Chia, Haixin Chang & Hyunsoo Yang, “Picosecond-long spin current generation along the low-symmetry axis of WTe2”, APS March Meeting 2021, virtual, USA (2021). – Contributed talk

11. Kyusup Lee, Jie Li, Liang Cheng, Junyong Wang, Dushyant Kumar, Qisheng Wang, Mengji Chen, Yang Wu, Goki Eda, Elbert E. M. Chia, Haixin Chang, Hyunsoo Yang, “Charge transfer and interlayer excitons in MoTe2/WTe2 van der Waals heterostructure”, ICMAT, Singapore (2019). – Contributed talk

12. Kyusup Lee, Jie Li, Liang Cheng, Junyong Wang, Dushyant Kumar, Qisheng Wang, Mengji Chen, Yang Wu, Goki Eda, Elbert E. M. Chia, Haixin Chang, & Hyunsoo Yang, “Charge transfer in a transition metal dichalcogenide semiconductor/Weyl semimetal van der Waals junctions”, APS March Meeting 2019, Boston, USA (2019). – Contributed talk

13. Kyu-Sup Lee, Rira Kang, Byungwoo Son, Dong-Yu Kim, Nan Ei Yu, & Do-Kyoeng Ko, “Highly efficient terahertz wave modulation based on light-driven carrier accumulation at perovskite-silicon hybrid devices”, Optical Society of Korea winter annual meeting 2017, T2D-IV-2 (2017). – Invited talk