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GPI Anchoring of Proteins in the ER Membrane
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シリコンの低場磁気抵抗の幾何学的な強化
Caihua Wan1, Xiaozhong Zhang, Xili Gao
1Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China.
Nature
|September 17, 2011
まとめ
我々は,p−n境界を用いて,シリコンにおける不均一性誘発磁気抵抗 (IMR) の強化を実証した. この新しいシリコンベースのデバイスは,低磁場に対して高い感度を提供し,磁場検出アプリケーションに適しています.
科学分野:
- 半導体物理学の物理
- 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.
- マテリアルサイエンス 材料科学
背景:
- 半導体,特にシリコンの不均一性誘発磁抵抗 (IMR) は,高磁場での大きな大きさと線形フィールド依存性により,興味を惹きます.
- 現在の理論は,キャリアの移動性の空間的変動がIMRの原因であることを示唆しています.
研究 の 目的:
- 低磁場での軽量ドーピングシリコンのIMRを大幅に向上させるため.
- 穴の注入と電流を適用することでIMRをチューニングします.
- 性能を改善した磁場検出のためのシリコンベースのデバイスを開発する.
主な方法:
- シリコンのp-n境界を不均一性の源として利用し,伝導はマイノリティとマジョリティの電荷キャリアによって支配されます.
- IMRの空間効果を高めるために,特定のデバイスの幾何学を設計する.
- 室温と異なる磁場での磁気抵抗反応の調査.
主要な成果:
- 孔注入と電流調節を通じて,シリコンのIMRを大幅に改善しました.
- 室温装置を実証し,磁気抵抗は0.07Tで10%に達し,0.2Tで100%に達しました.
- この装置は,低磁場に対する高い感度と,巨大な磁気抵抗装置に匹敵する大きな高磁場反応を示しています.
結論:
- 開発されたシリコンベースのIMRデバイスは,磁場検出のための有望なプラットフォームを提供します.
- その性能は,商用の大型磁気抵抗装置の性能に近い.
- シリコン技術とのデバイスの互換性は,シリコンベースの磁電電子機器のための既存のシリコンデバイスとの統合を容易にする.
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