小型のスピン・アンサンブルにおけるランダムな変動から順序を創造する
R Budakian1, H J Mamin, B W Chui
1IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120, USA. budakian@us.ibm.com
Science (New York, N.Y.)
|January 22, 2005
まとめ
研究者は,磁気共鳴力顕微鏡を使用して,スピン順序を作成するために,統計的なスピン変動を活用しました. この回転順は30秒間保存され,それから読み出すことができます.
科学分野:
- 物理 物理学 物理学とは
- 量子力学は量子力学である.
- マテリアルサイエンス 材料科学
背景:
- 電子スピンの統計的な変動は,小さな集合に固有のものです.
- 秩序あるスピン状態のためのこれらの変動を制御し,利用することは困難です.
研究 の 目的:
- 自然なスピン変動からスピン順序を作り,制御する方法を実証する.
- 作成されたスピンオーダーのストレージと読み取り機能を調査するために.
主な方法:
- 磁気共鳴力顕微鏡 (MRFM) を使用して,電子スピンと相互作用しました.
- 2つの異なるテクニックを用い,一時的なスピン順序の選択的なキャプチャと,スピン変動のリアルタイムフィードバック補正を行いました.
主要な成果:
- 電子スピン組の統計的な変動を活用して,スピン順序を成功裏に作成しました.
- スピンハイパーポラライゼーションと変動修正のための2つの新しい方法を実証しました.
- 作成されたスピン順序を約30秒間 (縦横のリラックス時間) 保存することが達成されました.
結論:
- スピンの順序は,固有の統計的なスピン変動から積極的に生成され,制御することができます.
- 開発された方法は,ナノスケールでのスピン状態の操作のための新しい経路を提供します.
- スピンの順序を記憶し読み出す能力は,量子情報処理とセンシングに影響を及ぼします.
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