PI

1. Contact

2. Education

•    B. S. 1994 Department of Physics, Korea Adv. Inst. of Sci. and Technol. (KAIST), Korea

•    M.S.  1996 Department of Advanced Materials Science and Engineering, KAIST, Korea

•    Ph.D. 2000 Department of Materials Science and Engineering, KAIST, Korea

3. Professional Careers

• 2020.10–present         KAIST, Professor at Department of Physics

• 2005.09–2020.09          Korea University, Assistant/Associate/Full Professor at Dept. of Mater. Sci. & Eng.

• 2012.11–2020.09          Korea University, Adjunct Professor at KU-KIST Graduate School of Converging Sci. and Technol.

• 2011.09-2012.08           CNST Visiting Fellow at the NIST, Gaithersburg and Visiting Associate Professor at U. of Maryland (sabbatical leave)

• 2000.03–2005.08          Samsung Adv. Inst. of Technol. (SAIT), Senior Researcher

• 2003.05–2005.03          SPINTEC, CEA-CNRS/Grenoble/DRFMC, France, Post-doctoral Fellow 

4. Academic Activities

Program/Publication Committee Member of Conferences

• INTERMAG 2023: Publication Co-Chair

• INTERMAG 2021: Program Co-Chair

• 2014-2021: Advisory Committee Member of MMM as a representative of IEEE

• 2016: Samsung 8th STT-MRAM Global Innovation Forum (Chair)

• before 2014: [2014] Samsung 4th STT-MRAM Global Innovation Forum (Moderator), [2013] Joint MMM/INTERMAG, ISAMMA, ECS, [2012] ICM, [2011] INTERMAG, Samsung Semiconductor Future Technology Forum 2011 "STT-MRAM Device Technology" (Moderator), [2010] ICAUMS, Joint MMM/INTERMAG, [2008] Asian Magnetic Conference, [2007] ISAMMA07

Awards and Recognition

• Korea Patent Award (The 2nd place), Korean Intellectual Property Office (1/4Q, 2005)

• Young Scientist Award, Korea University (2009) 

• Excellent Research on Basic Science, MEST, Korea (2010)   

• KUCE Crimson Professor, Korea University (2011)

• 100 Future Technologies and Leading Scientists in Korea; Spin Memory and Logic Devices, The National Academy of Engineering of Korea (2013)

• Top 10 Science News of the Year, The Korean Federation of Science and Technology Societies (2016)

• Excellent Research Award, Korea Magnetic Society (2016)

• Song-Gok Science and Technology Award, Korea Institute of Science and Technology (2019)

• Hye-Seul Science Award, Korea Magnetic Society (2020)

• APS (American Physical Society) Fellow (2022)

5. Itinerary

• 2020 Aug 12-13: Orbital worshop, Gyung-Ju, Korea

6. Research

Areas of research interest

• Spin Transport and Magnetization Dynamics

1. Spin Transfer Torque

2. Spin motive force

3. Spin-orbit coupling effects

• Spintronic Devices

1. STT-MRAM

2. Domain wall devices

3. Spin-torque oscillators

7. Presentations

Tutorial

8. "Spintronics based on the coupled dynamics of localized magnetic moments and itinerant electron spins", ICAMD, Jeju, Korea (2023).

7. "Spin-transfer torque and current-induced magnetization dynamics", Magnetics school (online) (2021).

6. "Spintronics based on Antiferromagnets and Ferrimagnets", SpinTECH IX, Fukuoka, Japan (2017).

5. "Spin-Orbitronics in Metals", International School on Spintronics and Spin-Orbitronics, Fukuoka, Japan (2016).

4. "Role of spin-orbit interaction in spintronics, Korea-Japan Spin-orbit workshop, Daejon, Korea (2015).

3.  “Basics of current-induced magnetic excitation”, International Symposium on Advanced Magnetic Materials and Application, Jeju, Korea (2007).

2.  “Lectures on Micromagnetic modeling for magnetic recording media and MRAM”, Magnetic Information Storage, Korean Magnetic Society, Daejon, Korea (2004).

1.  “Basics of Micromagnetic modeling”, The International Symposium on Magnetics for the 10th Anniversary of the Korean Magnetic Society, Jeju, Korea (2000).

Plenary Talks

1. "Ferrimagnetic spintronics", MML (International Symposium on Metallic Multilayers), Seoul, Korea (2023).

Invited Talks

113. "Orbital torque and orbital pumping", KMS, Busan, Korea (2023).

112. "Orbital torque and orbital pumping", MMM (Conference on Magnetism and Magnetic Materials), Dallas, USA (2023).

111. "Spin coherence length of antiferromagnets", KPS, Changwon, Korea (2023).

110. "Orbital torque and orbital pumping", Spin Asia, Chiang Mai, Thailand (2023).

109. "Large spin pumping from magnetic phase transition of FeRh", Spin Caloritonics XII, Tsukuba, Japan (2023).

108. "Enhanced magnon-magnon entanglement in compensated ferrimagnets", KMS, Busan, Korea (2022).

107. "Ferrimagnetic spintronics", ENGE, Jeju, Korea (2022).

106. "Ferromagnet-induced spin-orbit torques", KPS, Busan, Korea (2022).

105. "Orbital torque, orbital pumping, and chiral magnetoresistance", Orbitronics workshop, Daejeon, Korea (2022).

104. "Ferrimagnetic spintronics", SSDM (International conference on solid state devices and materials), Chiba, Japan (online) (2022).

103. "Ferrimagnetic spintronics", Samsung Global Research Symposium, Napa, USA (2022).

102. "Ferrimagnetic spintronics", SPIE spintronics XV, San Diego, USA (2022).

101. "Ferrimagnetic spintronics", APPC15 (The 15th Asia Pacific Physics Conference), Korea (online) (2022).

100. "Orbital torque in magnetic bilayers", Orbitronics: from topological matter to next level electronics, Ingelheim, Germany  (2022).

99. "Ferromagnet-induced spin-orbit torques", JEMS (Joint European Magnetism Symposia conference), Warsaw, Poland (online) (2022).

98. "Ferrimagnetic spintronics", DMSE colloquium, KAIST, Daejeon, Korea (2022).

97. "Enhanced spin Seebeck effect by oxygen manipulation", Spin caloritronics XI, UIUC, USA (2022).

96. "Orbital torque in magnetic bilayers", Korean Physical Society (online) (2022).

95. "Ferrimagnetic spintronics", Physics colloquium, Ulsan Univ., Ulsan, Korea (2022).

94. "Ferrimagnetic spintronics", SPICE-SPIN+X seminar, Mainz, Germany (online) (2022).

93. "Orbital torque in magnetic bilayers", UNIST seminar, Ulsan, Korea (2022).

92. "Ferromagnet-induced spin-orbit torques", The 1st online RIEC international workshop on spintronics, Sendai, Japan (online) (2021).

91. "Ferromagnet-induced spin-orbit torques", SRC workshop, Daejeon, Korea (2021).

90. "Ferromagnet-induced spin-orbit torques", TMRC (The 32nd Magnetic Recording Conference), CMU, USA (online) (2021).

89. "Magnetization dynamics and spin transport in compensated ferrimagnets", SRC workshop, Pohang, Korea (2021).

88. "Magnetization dynamics and spin transport in compensated ferrimagnets", APS March meeting (online) (2021).

87. "Magnetization dynamics and spin transport in compensated ferrimagnets", CCES seminar, Seoul Nat'l Univ. (online) (2021).

86. "Magnetization dynamics and spin transport in compensated ferrimagnets", Korean Physical Society (online)  (2020).

85. "Magnetization dynamics and spin transport in compensated ferrimagnets", Online spintronics seminar (2020).

84. "Magnetics and Spintronics: from fundamentals to applications", Hyundai Motors Co. (online) (2020).

83. "Orbital Hall effect in magnetic bilayers", Samsung Global Research Symposium, Seoul, Korea (2019).

82. "Magnetization dynamics and spin transport in antiferromagnetically coupled ferrimagnets", International Workshop Spintronics, Cusco, Peru (2019).

81. "Recent progress of magnetic domain-wall racetrack memory", Samsung Advanced Institute of Technology, Suwon, Korea (2019).

80. "Ferrimagnetic spintronics", Physics Colloquium, KAIST, Daejeon, Korea (2019).

79. "Ferrimagnetic spintronics", Physics Colloquium, Seoul Nat'l Univ., Seoul, Korea (2019).

78. "Long spin coherence length and bulk-like spin-orbit torque in ferrimagnetic multilayers", E-Nano (online), 나노기술연구협의회 (2019). 

77. "Ferrimagnetic spintronics", MORIS 2019, Prague, Czech Republic (2019).

76. "Spin currents and spin-orbit torques in ferromagnetic trilayers", Spin-Orbitronics, Otaru, Japan (2019).

75. "Spin currents and spin-orbit torques in ferromagnetic trilayers", Spin Mechanics 6, Zao, Japan (2019).

74. "Ferrimagnetic spintronics", The 5th Muju International Winter School, Muju, Korea (2019).

73. "Spin currents and spin-orbit torques in ferromagnetic trilayers", IEDM, 10th MRAM Global Innovation Forum, San Francisco, USA (2018).

72. "Spin currents and spin-orbit torques in ferromagnetic trilayers", Kavli ITS workshop, Beijing, China (2018).

71. "Magnetization dynamics in ferrimagnets", Spin Summit 2018, Xingyi, China (2018).

70. "Spin currents and spin-orbit torques in ferromagnetic trilayers", ICAUMS 2018, Jeju, Korea (2018).

69. "Spintronics based on Antiferromagnets and Ferrimagnets", PIERS 2017, Singapore (2017).

68. "Spintronics based on Antiferromagnets and Ferrimagnets", Antiferromagnetic Spintronics Workshop, Grenoble, France (2017).

67. "Spintronics based on Antiferromagnets and Ferrimagnets", Spin Summit 2017, Jinggangshan, China (2017).

66. "Antiferromagnetic and ferrimagnetic domain wall motion", Korean Institute of Electrical and Electronic Materials Engineers Annual Summer Conference, Pyeong-Chang, Korea (2017).

65. "Antiferromagnetic domain wall motion driven by spin-orbit torques", International Conference on Computational Physics (ICCP 10), Macau, China (2017).

64. "Antiferromagnetic/ferrimagnetic domain wall dynamics", Korea-Japan Spin-Orbit workshop, Fukuoka, Japan (2016).

63. "Antiferromagnetic spintronics for low-power neuromorphic computing", DGIF 2016, Daegu, Korea (2016).

62. "Ferrimagnetic spintronics: prospects and perspectives", The 14th RIEC International Workshop on Spintronics, Sendai, Japan (2016).

61. "Spintronic applications based on antiferromagnets and ferrimagnets", The 8th MRAM Global Innovation Forum, Seoul, Korea (2016).

60. "Emerging three-terminal magnetic memory devices", The 2nd ImPACT workshop, Tsukuba, Japan (2016).

59. "Antiferromagnetic domain wall motion driven by spin-orbit torque", SSDM2016, Tsukuba, Japan (2016).

58. "Various phenommena at magnetic interfaces subject to spin-orbit coupling", GP-Spin workshop, Sendai, Japan (2016).

57. "Antiferromagnetic domain wall motion driven by spin-orbit torque", ICAUMS, Tainan, Taiwan (2016).

56. "Antiferromagnetic domain wall motion driven by spin-orbit torque", ICEM2016, Singapore (2016).

55. "Antiferromagnetic domain wall motion driven by spin-orbit torque", Insulatronics 2016, Longyearbyen, Norway (2016).

54. "Antiferromagnetic domain wall motion driven by spin-orbit torque", DGIST-Lawrence Berkeley Lab. workshop, Jeju, Korea (2016).

53. "Antiferromagnetic domain wall motion driven by spin-orbit torque", Korea Institute of Metals and Materials, Gyoungju, Korea (2016).

52. "Relativistic motion of antiferromagnetic domain wall driven by spin-orbit torque", Korea-Japan Spin-orbit workshop, Daejon, Korea (2015).

51. "Current-induced asymmetric magnetoresistance due to energy transfer via quantum spin-flip process", Korean Physical Society, Korea (2015).

50. "Interfacial Dzyaloshinskii-Moriya interaction and its use in spintronics", Nano Korea, Seoul, Korea (2015).

49. "Interfacial Dzyaloshinskii-Moriya interaction and its use in spintronics", The 5th MRAM Global Innovation Forum, Tokyo, Japan (2015).

48.  "Band-filling effects on interfacial magnetic properties", Workshop on spin-orbitronics, Kyoto, Japan (2015).

47.  "Band-filling effects on interfacial magnetic properties", The 1st International workshop on spin-orbitronics, Seoul, Korea (2015).

46. "Band-filling effects on interfacial magnetic properties", The 2nd International workshop on spin-orbit induced torque (SOIT), Thuwal, Saudi Arabia (2015).

45. "Magnetization dynamics in the presence of Dzyaloshinskii-Moriya interaction", ISPSA, Jeju, Korea (2014).

44. "Magnetization dynamics in the presence of Dzyaloshinskii-Moriya interaction", Korean Physical Society meeting, Gwangju, Korea (2014).

43. "Theoretical study on basic properties of STT-MRAM", Samsung 4th STT-MRAM Global Innovation Forum, Seoul, Korea (2014).

42. "Theoretical studies on magnetic interfaces subject to spin-orbit coupling", 17th international symposium on physics of semiconductors and applications, Jeju, Korea (2014).

41. "Theoretical studies on magnetic interfaces subject to spin-orbit coupling", 12th RIEC international workshop on spintronics, Sendai, Japan (2014).

40. "Spin-orbitronics and spin-orbit-caloritronics", Korean Physical Society meeting, Daejon, Korea (2014).

39. "STT-MRAM Overview, Scalability and Future Challenges", Samsung 1st STT-MRAM Global Innovation Forum, Milpitas, USA (2013).

38. "Theoretical studies on magnetic interfaces subject to spin-orbit coupling", ICAMD 2013, Jeju, Korea (2013).

37. "Theoretical studies on magnetic interfaces subject to spin-orbit coupling", Nano-scale dynamics in magnetism workshop, Daejon, Korea (2013).

36. "Angular dependence of spin-orbit spin transfer torque", KITP, Santa Babara, USA (2013).

35. "Current-induced magnetization dynamics in the presence of spin-orbit coupling", Gordon Research Conference, Spin dynamics in nanostructures, Hong Kong, China (2013).

34. "Angular dependence of spin-orbit spin transfer torque", Magnonics 2013, Varberg, Sweden (2013).

33. "Angular dependence of spin-orbit spin transfer torque", NewSpin3, Mainz, Germany (2013).

32. "Angular dependence of spin-orbit spin transfer torque", APS March meeting, Baltimore, USA (2013).

31. "Angular dependence of spin-orbit spin transfer torque", International workshop on spin-orbit induced torque (SOIT), Thuwal, Saudi Arabia (2013).

30. "Unconventional current-induced magnetization dynamics", International Conference of the Asian Union of Magnetic Societies (ICAUMS), Nara, Japan (2012).

29. "Bias dependence of perpendicular spin torque at high bias", International Conference on Magnetism (ICM), Busan, Korea (2012)

28. “Current-induced domain motion in the presence of spin-orbit coupling”, The 8th RIEC international workshop on spintronics, Sendai, Japan (2012).

27. “Magnetization dynamics coupled with spin and spin wave”, Spincaloritronics workshop, Leiden, The Netherlands (2011).

26. “Self-consistent calculations of transport and magnetization dynamics”, The 7th RIEC international workshop on spintronics, Sendai, Japan (2011).

25. “Self-consistent calculations of transport and magnetization dynamics”, The 1st International Conference of the Asian Union of Magnetics Societies (ICAUMS), DA05, Jeju, Korea (2010).

24. “Self-consistent calculations of transport and magnetization dynamics”, The 6th Taiwan International Conference on Spintronics Meeting, Taichung, Taiwan (2010).

23. “Bias-voltage dependence of perpendicular spin-transfer torque in asymmetric magnetic tunnel junctions”, Magnetism and Magnetic Materials Conference (MMM), GC-01, Atlanta, USA (2010).

22. “Bias-voltage dependence of perpendicular spin-transfer torque in asymmetric magnetic tunnel junctions”, International Symposium on Advanced Magnetic Materials and Applications (ISAMMA), BX-03, Sendai, Japan (2010).

21. “Self-consistent calculations of transport and magnetization dynamics”, APS (American Physical Society) March meeting, L37.00008, Portland, USA (2010).

20. “Bias-voltage dependence of perpendicular spin-transfer torque in asymmetric MgO-based magnetic tunnel junctions”, The 6th RIEC international workshop on spintronics, Sendai, Japan (2010).

19. “Perpendicular spin torque in MgO-based asymmetric magnetic tunnel junctions”, Joint Symposium on Advanced Materials, Sendai, Japan (2009).

18. “Current-induced control of spin-wave attenuation”, The 5rd Taiwan International Conference on Spintronics Meeting, Taichung, Taiwan (2009).

17. “Perpendicular spin torques in magnetic system”, Workshop on exploring and shaping the future of nanomagnetism, Mittelwihr, France (2009).

16. “Perpendicular spin torque in magnetic system”, SPIE Optics and Photonics conference, San Diego, USA (2009).

15. “Perpendicular spin torque in MgO-based asymmetric magnetic tunnel junctions”, Japanese Society of Applied Physics, Tsukuba, Japan (2009).

14. “Self-torque induced by local spin-transfer effect and lateral spin diffusion in magnetic layers with inhomogeneous magnetization”, International Magnetic Conference (INTERMAG), EA-05, Madrid, Spain (2008).

13. “Perpendicular spin-torques in magnetic tunnel junctions and domain walls”, The 4th Taiwan International Conference on Spintronics Meeting, Taipei, Taiwan (2008).

12. “Nonlocal spin-transfer torque induced by lateral spin diffusion in magnetic layers with inhomogeneous magnetization”, The 23rd Nishinomiya-Yukawa Memorial International Workshop, Spin Transport in Condensed Matter, Kyoto, Japan (2008).

11. “Numerical Study on Current-Induced Magnetization Dyamics”, The 2nd International Workshop on Materials Science and Nano-Engineering, Osaka (2007)

10. “Self-consistent Feedback between Inhomogeneous Magnetization and Spin-transfer Torque”, The 5th International Conference on Advanced Materials and Devices, Jeju (2007).

9.   “Effect of Spin Memory Loss at Interface of Ferromagnet and Normal Metal on Spin-Transfer Torque”, Korean Magnetic Society, Sun-cheon (2007).

8.   “Challenging issues for ultrahigh density STT MRAM”, The 3rd Taiwan International Conference on Spintronics Meeting, Yunlin, Taiwan (2007).

7.   "Self-consistent feedback between inhomogeneous magnetization and spin-transfer torque", Materials Today, Beijing, China (2007).

6.   “Micromagnetic investigation of magnetic dynamics induced by spin-transfer torque”, The Korean Institute of Metals and Materials, Jeju, Korea (2006).

5.   “Magnetic dynamics induced by spin-transfer-torque”, The 3rd Asian Forum on Magnetics, Shimane, Japan (2006).

4.   “Micromagnetic study on magnetic dynamics induced by a spin-polarized current”, The 2nd Taiwan International Conference on Spintronics Meeting, Yunlin, Taiwan (2006).

3.   “Micromagnetic Investigation of Magnetic dynamics Induced by Spin-Transfer-Torque”, The 2nd Asian Forum on Magnetics, Yong-Pyeong, Korea (2005).

2.   “Micromagnetic Investigation of Magnetic dynamics Induced by Spin-Transfer-Torque”, Current Topics in Micromagnetics, New York, USA (2005).

1.  "Role of nucleation field in perpendicular magnetic recording", Asian Symposium on Information Storage Technology (ASIST) '99, Tokyo, Japan (1999).