Fluctuations and Correlations in Semiconductor Spintronics

半导体自旋电子学中的波动和相关性

• 批准号: 94717163
• 负责人: Professor Dr. Gerd Schön
• 金额: --
• 依托单位: Institut für Theoretische Festkörperphysik (TFP)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2008
• 资助国家: 德国
• 起止时间: 2007-12-31 至 2011-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/94717163?language=en
• 关键词: Fluctuations; Correlations; Semiconductor; Spintronics

Spintronics [1], i.e. the control and measurement of the spin degrees of freedom of the electron, is gaining increasing importance for the next generation of electronic devices, sensors, as memory, and for computing and information processing [2]. With decreasing dimensions of the electronic devices (below 40 nm) the estimation of their fidelity requires the analysis of the noise, or the correlations of current fluctuations. Much work has been done in this direction, but the analysis of the noise in spintronics devices is still an emerging field. The aim of this project is to advance our understanding of spin and current fluctuations in spintronic devices, e.g., systems of semiconductor quantum dots, under non-equilibrium conditions and in the presence of interactions.

自旋电子学[1]，即控制和测量电子的自旋自由度，对于下一代电子器件，传感器，存储器以及计算和信息处理[2]越来越重要。随着电子设备尺寸的减小（低于40纳米），对其保真度的估计需要分析噪声或电流波动的相关性。在这方面已经做了很多工作，但自旋电子学器件中的噪声分析仍然是一个新兴的领域。这个项目的目的是提高我们对自旋电子器件中自旋和电流波动的理解，例如，半导体量子点系统，在非平衡条件下，并在相互作用的存在下。

项目成果

Numerical Study on Spin Torque Switching in Thermally Activated Region

• DOI: 10.1143/apex.5.063009
• 发表时间: 2012-06-01
• 期刊: APPLIED PHYSICS EXPRESS
• 影响因子: 2.3
• 作者: Taniguchi, Tomohiro;Shibata, Mitsutoshi;Imamura, Hiroshi
• 通讯作者: Imamura, Hiroshi

Work fluctuation theorem for a classical circuit coupled to a quantum conductor

耦合到量子导体的经典电路的功涨落定理

• DOI: 10.1103/physrevb.86.075420
• 发表时间: 2012
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: Y. Utsumi;D. S. Golubev;M. Marthaler;G. Schön;K. Kobayashi
• 通讯作者: K. Kobayashi

Bidirectional single-electron counting and the fluctuation theorem

• DOI: 10.1103/physrevb.81.125331
• 发表时间: 2010-03-01
• 期刊: PHYSICAL REVIEW B
• 影响因子: 3.7
• 作者: Utsumi, Y.;Golubev, D. S.;Schoen, Gerd
• 通讯作者: Schoen, Gerd

Irreversibility on the Level of Single-Electron Tunneling

• DOI: 10.1103/physrevx.2.011001
• 发表时间: 2012-01-13
• 期刊: PHYSICAL REVIEW X
• 影响因子: 12.5
• 作者: Kueng, B.;Roessler, C.;Ensslin, K.
• 通讯作者: Ensslin, K.

Fluctuation theorem for a double quantum dot coupled to a point-contact electrometer

双量子点与点接触静电计耦合的涨落定理

• DOI: 10.1103/physrevb.84.075323
• 发表时间: 2011
• 期刊: Physical Review B
• 影响因子: 3.7
• 作者: D. S. Golubev;M. Marthaler;Y. Utsumi;G. Schön
• 通讯作者: G. Schön