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arXiv 1007.2138cond-mat.mes-hallcond-mat.str-el
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准一维纳米结构中非平衡自旋布居的直接观测

Direct observation of non-equilibrium spin population in quasi-one-dimensional nanostructures

T. -M. Chen, A. C. Graham, M. Pepper, I. Farrer, D. Anderson, G. A. C. Jones, D. A. Ritchie

摘要:

对两种自旋物质的相互作用能级之间的相互作用的观察受到连续跟踪能级的困难的限制,因此量子线中的自旋输运仍然没有得到很好的理解。我们提出了一个直流电导功能的非平衡输运制度,一个直接的迹象表明,第一个一维子带填充主要是由一个自旋物种。这种反常自旋布居数随磁场和源漏偏置的变化是直接测量的。我们显示的源极-漏极偏置改变自旋极化在半导体纳米线,提供了一个完全电气的方法,创建和操纵自旋极化以及自旋极化电流。

英文摘要:

Observation of the interplay between interacting energy levels of two spin species is limited by the difficulties in continuously tracking energy levels, and thus leaves spin transport in quantum wires still not well understood. We present a dc conductance feature in the non-equilibrium transport regime, a direct indication that the first one-dimensional subband is filled mostly by one spin species only. How this anomalous spin population changes with magnetic field and source-drain bias is directly measured. We show the source-drain bias changes spin polarisation in semiconductor nanowires, providing a fully electrical method for the creation and manipulation of spin polarization as well as spin-polarized currents.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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