Premium
Ferromagnetic Materials: Gigantic Current Control of Coercive Field and Magnetic Memory Based on Nanometer‐Thin Ferromagnetic van der Waals Fe 3 GeTe 2 (Adv. Mater. 4/2021)
Author(s) -
Zhang Kaixuan,
Han Seungyun,
Lee Youjin,
Coak Matthew J.,
Kim Junghyun,
Hwang Inho,
Son Suhan,
Shin Jeacheol,
Lim Mijin,
Jo Daegeun,
Kim Kyoo,
Kim Dohun,
Lee HyunWoo,
Park JeGeun
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202170029
Subject(s) - spintronics , condensed matter physics , ferromagnetism , van der waals force , coercivity , materials science , berry connection and curvature , magnetization , magnetic field , topology (electrical circuits) , physics , quantum mechanics , geometric phase , electrical engineering , molecule , engineering
In article number 2004110, Kaixuan Zhang, Hyun‐Woo Lee, Je‐Geun Park, and co‐workers report gigantic current control of the coercive field in the van der Waals ferromagnet Fe 3 GeTe 2 . This results from an unusual type of gigantic spin–orbit torque (SOT) within Fe 3 GeTe 2 itself, which is directly related to its special symmetries, large Berry curvature, and band topology. The current‐induced SOT substantially changes the energy profile ball and suppresses the energy barrier, creating an easy path for magnetization switching and pushing the hard ferromagnet loop to a soft one. Such an effect will be extremely useful for magnetic memory and spintronics.