Gigantic Current Control of Coercive Field and Magnetic Memory Based on Nanometer-Thin Ferromagnetic van der Waals Fe3 GeTe2

Gigantic Current Control of Coercive Field and Magnetic Memory Based on Nanometer-Thin Ferromagnetic van der Waals Fe3 GeTe2

© 2020 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 33(2021), 4 vom: 01. Jan., Seite e2004110
1. Verfasser: Zhang, Kaixuan (VerfasserIn)
Weitere Verfasser: Han, Seungyun, Lee, Youjin, Coak, Matthew J, Kim, Junghyun, Hwang, Inho, Son, Suhan, Shin, Jeacheol, Lim, Mijin, Jo, Daegeun, Kim, Kyoo, Kim, Dohun, Lee, Hyun-Woo, Park, Je-Geun
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article 2D topological ferromagnetic metal Fe3GeTe2 current-tunable coercive field magnetic van der Waals materials spintronic and magnetic memory unusually large spin-orbit torque
Beschreibung
Zusammenfassung:© 2020 Wiley-VCH GmbH.
Controlling magnetic states by a small current is essential for the next-generation of energy-efficient spintronic devices. However, it invariably requires considerable energy to change a magnetic ground state of intrinsically quantum nature governed by fundamental Hamiltonian, once stabilized below a phase-transition temperature. Here, it is reported that, surprisingly, an in-plane current can tune the magnetic state of the nanometer-thin van der Waals ferromagnet Fe3 GeTe2 from a hard magnetic state to a soft magnetic state. It is a direct demonstration of the current-induced substantial reduction of the coercive field. This surprising finding is possible because the in-plane current produces a highly unusual type of gigantic spin-orbit torque for Fe3 GeTe2 . In addition, a working model of a new nonvolatile magnetic memory based on the principle of the discovery in Fe3 GeTe2 , controlled by a tiny current, is further demonstrated. The findings open up a new window of exciting opportunities for magnetic van der Waals materials with potentially huge impact on the future development of spintronic and magnetic memory
Beschreibung:Date Revised 22.02.2021
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202004110