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超低電流密度におけるMnSiにおけるスピン転送トルク
F Jonietz1, S Mühlbauer, C Pfleiderer
1Physik-Department E21, Technische Universität München, D-85748 Garching, Germany.
Science (New York, N.Y.)
|December 18, 2010
まとめ
電流は,マンガネス・シリコンの磁気スキーミオンを効率的に操作する. このスピントロニックの突破は,スピン構造を回転させるために最小限の電流を使用し,効率的な結合機構を明らかにします.
科学分野:
- スピントロニクス (Spintronics) は,スピントロニクス (Spintronics) を開発したものです.
- 凝縮物質物理学 凝縮物質物理学
- マテリアルサイエンス 材料科学
背景:
- 電流によるスピン操作は,スピントロニクスにとって極めて重要です.
- スキルミオンの網状は,マンガン・シリコンの網状と同様に,複雑な磁気渦構造を示しています.
- これらの材料の電流によるダイナミクスを理解することは,将来のデバイスの鍵です.
研究 の 目的:
- 大量のマンガネス・シリコンの磁気構造に対する電流の影響を調査するために.
- 非常に低い電流密度下でのスキルミオンの網格の振る舞いを観察するために.
主な方法:
- 磁気構造を検知するために中性子散射を用いた.
- 大量のマンガン・シリコンサンプルに制御された電流を適用した.
主要な成果:
- 電流への反応として,屈折パターンの観測された回転.
- この効果は,典型的な値より5桁小さい電流で達成されました.
- 不均質なスピン電流とトポロジカルなスピン構造の間の効率的なカップリングが実証されました.
結論:
- 電流は,散発材料の磁気スキルミオンを効率的に制御することができます.
- この発見は,電流による磁気化ダイナミクスの新しいメカニズムを示唆している.
- この研究は,低電力スピントロニックデバイスのための新しい道を開きます.
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