磁気トポロジック断熱器のドメイン壁の量子化キラルエッジ伝導
K Yasuda1, M Mogi1, R Yoshimi2
1Department of Applied Physics and Quantum-Phase Electronics Center (QPEC), University of Tokyo, Tokyo 113-8656, Japan.
Science (New York, N.Y.)
|December 9, 2017
まとめ
研究者はトポロジック・イソレーターで磁域壁にキラル・エッジ状態を作り出した. ドメイン壁の伝導を制御することで 再構成可能な低電力スピントロニックデバイスを可能にします
科学分野:
- 凝縮物質物理学
- 材料科学
- スピントロニクス
背景:
- 磁気および介電材料は,異なる順序のパラメータを持つドメインを示します.
- ドメイン・ウォール (DW) の制御は,外部フィールドに対する非揮発性反応を可能にします.
研究 の 目的:
- 磁気トポロジック断熱器の磁気DWでキラル・エッジ・ステート (CES) を実現する.
- スピントロニックアプリケーションのための再構成可能なCESを使用した概念証明装置を実証する.
主な方法:
- 磁力顕微鏡を用いた量子異常ハール状態内の磁域の製造.
- 輸送測定を介してDWに沿った一次元キラルエッジ伝導の実験的検証
- 再構成可能なCESとLandauer-Büttiker形式主義に基づくデバイスの実装.
主要な成果:
- マグネティック・トポロジック・アイソレーターにおける磁気DWのCESの成功
- エンジニアリングされたDWチャネルに沿った制御された一次元エッジ伝導の実証.
- 複数のドメインの構成のための概念証明装置の開発.
結論:
- チラルのエッジ状態は,磁気領域の壁で効果的に実現し,制御することができます.
- エンジニアリングされたDWは,低電力スピントロニックデバイスのための有望なチャネルを提供します.
- この研究は,新しいスピントロニックデバイスのアーキテクチャへの道を開きます.
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