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

• 山田 豊和

  千葉大学大学院融合科学研究科ナノサイエンス専攻

書誌事項

タイトル別名

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

抄録

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.

収録刊行物

• 表面科学

  表面科学 32 (6), 361-367, 2011

  公益社団法人 日本表面科学会

キーワード

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

詳細情報

• CRID: 1390282681434954496
• NII論文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
• 本文言語コード: ja
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• 抄録ライセンスフラグ: 使用不可