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Gigantic Current Control of Coercive Field and Magnetic Memory Based on Nanometer-Thin Ferromagnetic van der Waals Fe 3 GeTe 2 .

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العنوان: Gigantic Current Control of Coercive Field and Magnetic Memory Based on Nanometer-Thin Ferromagnetic van der Waals Fe 3 GeTe 2 .
المؤلفون: Zhang K; Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, South Korea.; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea.; Center for Quantum Materials, Seoul National University, Seoul, 08826, South Korea., Han S; Department of Physics, Pohang University of Science and Technology, Pohang, 37673, South Korea., Lee Y; Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, South Korea.; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea.; Center for Quantum Materials, Seoul National University, Seoul, 08826, South Korea., Coak MJ; Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, South Korea.; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea., Kim J; Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, South Korea.; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea.; Center for Quantum Materials, Seoul National University, Seoul, 08826, South Korea., Hwang I; Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, South Korea.; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea.; Center for Quantum Materials, Seoul National University, Seoul, 08826, South Korea., Son S; Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, South Korea.; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea.; Center for Quantum Materials, Seoul National University, Seoul, 08826, South Korea., Shin J; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea., Lim M; Department of Physics, Pohang University of Science and Technology, Pohang, 37673, South Korea., Jo D; Department of Physics, Pohang University of Science and Technology, Pohang, 37673, South Korea., Kim K; Korea Atomic Energy Research Institute, 111 Daedeok-daero, Daejeon, 34057, South Korea., Kim D; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea., Lee HW; Department of Physics, Pohang University of Science and Technology, Pohang, 37673, South Korea.; Asia Pacific Center for Theoretical Physics, 77 Cheongam-ro, Nam-gu, Pohang, 3773, South Korea., Park JG; Center for Correlated Electron Systems, Institute for Basic Science, Seoul, 08826, South Korea.; Department of Physics and Astronomy, and Institute of Applied Physics, Seoul National University, Seoul, 08826, South Korea.; Center for Quantum Materials, Seoul National University, Seoul, 08826, South Korea.
المصدر: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2021 Jan; Vol. 33 (4), pp. e2004110. Date of Electronic Publication: 2020 Dec 06.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Wiley-VCH Country of Publication: Germany NLM ID: 9885358 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1521-4095 (Electronic) Linking ISSN: 09359648 NLM ISO Abbreviation: Adv Mater Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Publication: Sept. 3, 1997- : Weinheim : Wiley-VCH
Original Publication: Deerfield Beach, FL : VCH Publishers, 1989-
مستخلص: 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 Fe 3 GeTe 2 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 Fe 3 GeTe 2 . In addition, a working model of a new nonvolatile magnetic memory based on the principle of the discovery in Fe 3 GeTe 2 , 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.
(© 2020 Wiley-VCH GmbH.)
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معلومات مُعتمدة: IBS-R009-G1 Institute for Basic Science (IBS) in Korea; 2020R1A3B2079375 National Research Foundation of Korea; BA-1501-07 Samsung Science and Technology Foundation; BA-1501-51 Samsung Science and Technology Foundation; BA-1501-07 Samsung; 016R1D1A1B02008461 Ministry of Education, Science and Technology
فهرسة مساهمة: Keywords: 2D topological ferromagnetic metal Fe3GeTe2; current-tunable coercive field; magnetic van der Waals materials; spintronic and magnetic memory; unusually large spin-orbit torque
تواريخ الأحداث: Date Created: 20201207 Latest Revision: 20210222
رمز التحديث: 20221213
DOI: 10.1002/adma.202004110
PMID: 33283320
قاعدة البيانات: MEDLINE
الوصف
تدمد:1521-4095
DOI:10.1002/adma.202004110