Electric Field Control of Fe Nano Magnets: Magnetoelectric Coupling at Metal Surfaces

• YAMADA Toyokazu

  Graduate School of Advanced Integration Science, Chiba University

Bibliographic Information

Other Title

• 電界による鉄ナノ磁石制御：金属表面での磁気電気結合の発見

Abstract

Magnetoelectric coupling at metal surfaces opens up a new possibility for metallic non-volatile magnetic data-storage devices, in which the magnetic bits are controlled by an electric field. We studied the atomic and magnetic order in bilayer Fe nano-islands grown on a Cu(111) substrate with a scanning tunneling microscopy setup in ultra-high vacuum at 4.5 K. Electric field pulses (10⁸-10⁹ V/m) were found to be able to cause a displacement of the Fe atoms, switching simultaneously the crystalline and the magnetic order, which is the prove of magnetoelectric coupling at the metallic Fe surface. We also succeeded in controlling the direction of the switching by the polarity of the electric field.

Journal

• Hyomen Kagaku

  Hyomen Kagaku 32 (6), 361-367, 2011

  The Surface Science Society of Japan

Keywords

• magnetoelectric coupling
• iron
• surface magnetism
• nanomagnet
• spin-polarized scanning tunneling microscopy

Details

• CRID: 1390282681434954496
• NII Article ID: 130004486661
• DOI: 10.1380/jsssj.32.361
• ISSN: 18814743
• ISSN: 03885321
• Web Site: http://www.jstage.jst.go.jp/article/jsssj/32/6/32_6_361/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed