Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Young-Wan Oh"'
Autor:
Dongha Kim, Young-Wan Oh, Jong Uk Kim, Soogil Lee, Arthur Baucour, Jonghwa Shin, Kab-Jin Kim, Byong-Guk Park, Min-Kyo Seo
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Magneto-optic Kerr effect microscopy is useful for dynamic magnetic studies, but is limited by the weak magneto-optical activity. Here, the authors show that extreme anti-reflection result in a Kerr amplitude as large as 20° and enables real-time de
Externí odkaz:
https://doaj.org/article/8bc098f899944064832aede55a6e4881
Autor:
Hae-Yeon Lee, Sanghoon Kim, June-Young Park, Young-Wan Oh, Seung-Young Park, Wooseung Ham, Yoshinori Kotani, Tetsuya Nakamura, Motohiro Suzuki, Teruo Ono, Kyung-Jin Lee, Byong-Guk Park
Publikováno v:
APL Materials, Vol 7, Iss 3, Pp 031110-031110-7 (2019)
Spin–orbit torque facilitates efficient magnetisation switching via an in-plane current in perpendicularly magnetised heavy-metal/ferromagnet heterostructures. The efficiency of spin–orbit-torque-induced switching is determined by the charge-to-s
Externí odkaz:
https://doaj.org/article/4c1fc4695d0144369b79e359bbb939e2
Publikováno v:
Current Applied Physics. 19:50-54
We report the dependence of voltage-controlled magnetic anisotropy (VCMA) effect and its volatility on an underlayer (UL) in CoFeB/MgO structures. For a sample with Ta or Pt UL, the VCMA effect occurs when the applied gate voltage (Vg) exceeds a crit
Autor:
Kab-Jin Kim, Jonghwa Shin, Min-Kyo Seo, Arthur Baucour, Byong-Guk Park, Dong Ha Kim, Soogil Lee, Jong Uk Kim, Young-Wan Oh
Publikováno v:
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Magnetic and spintronic media have offered fundamental scientific subjects and technological applications. Magneto-optic Kerr effect (MOKE) microscopy provides the most accessible platform to study the dynamics of spins, magnetic quasi-particles, and
Publikováno v:
IEEE Transactions on Magnetics. 53:1-5
Spin–orbit torque (SOT) originates from the spin–orbit interaction of non-magnetic heavy metals (HMs), allowing for an electrical manipulation of perpendicular magnetization in HM/ferromagnet (FM)/oxide structures. In this paper, we experimentall
Autor:
Wooseung Ham, Seung-Young Park, Teruo Ono, Sanghoon Kim, Yoshinori Kotani, Tetsuya Nakamura, Young Wan Oh, Hae Yeon Lee, Byong-Guk Park, Kyung Jin Lee, Juneyoung Park, Motohiro Suzuki
Publikováno v:
APL Materials, Vol 7, Iss 3, Pp 031110-031110-7 (2019)
Spin–orbit torque facilitates efficient magnetisation switching via an in-plane current in perpendicularly magnetised heavy-metal/ferromagnet heterostructures. The efficiency of spin–orbit-torque-induced switching is determined by the charge-to-s
Autor:
Hyun-Woo Lee, Kyoung-Whan Kim, Seung-heon Chris Baek, Gyungchoon Go, Chang Geun Yang, Young Wan Oh, Ki-Seung Lee, Y. M. Kim, Byong-Guk Park, Eun Sang Park, Hae Yeon Lee, Kyung Jin Lee, Jong-Ryul Jeong, Byoung-Chul Min, Kyeong Dong Lee
Publikováno v:
Nature Nanotechnology. 11:878-884
Spin-orbit torques arising from the spin-orbit coupling of non-magnetic heavy metals allow electrical switching of perpendicular magnetization. However, the switching is not purely electrical in laterally homogeneous structures. An extra in-plane mag
Publikováno v:
Journal of the Korean Physical Society. 67:1235-1239
The magneto-optical polar Kerr spectra of CoFeB/MgO thin films on different kinds of underlayers (Hf, Pt) were investigated in order to understand the origin of the interfacial perpendicular magnetic anisotropy (PMA) in that structure. The Kerr spect
Autor:
Kyoung J. Lee, Gerrit van der Laan, Jae Wook Lee, Seung-Young Park, Byong-Guk Park, Young Wan Oh, Gyungchoon Go, Adriana I. Figueroa
Publikováno v:
Physical Review B. 96
The magnetization direction in heavy-metal (HM)/ferromagnet bilayers can be electrically controlled by spin-orbit torque (SOT); however, the efficiency of the SOT which depends on the spin-orbit coupling of the HM layer or its spin-Hall angle has to
Autor:
Vivek Amin, Young Wan Oh, Mark D. Stiles, Gyungchoon Go, Geunhee Lee, Seung Jae Lee, Kab-Jin Kim, Kyoung J. Lee, Byong-Guk Park, Seung-heon Chris Baek
Publikováno v:
Nature materials. 17(6)
Magnetic torques generated through spin–orbit coupling1–8 promise energy-efficient spintronic devices. For applications, it is important that these torques switch films with perpendicular magnetizations without an external magnetic field9–14. O