Coherent Spin Amplification Using a Beam Splitter.

Coherent Spin Amplification Using a Beam Splitter.
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使用分束器进行相干自旋放大。

DOI:
10.1103/physrevlett.120.137701
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发表时间:
2018
影响因子:
8.6
通讯作者:
M. Pepper
M. Pepper
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
C. Yan;Sanjeev Kumar;K. Thomas;P. See;I. Farrer;D. Ritchie;J. Griffiths;G. Jones;M. Pepper

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我们报告自旋放大使用电容分束器在n型GaAs中的自旋极化监测通过横向电子聚焦测量。结果表明,部分自旋极化电流注入的发射极可以精确地控制,与它相关的自旋极化可以放大的分束器,这样就可以得到一个相当高的自旋极化约50%。此外,自旋保持相干,如量子干涉的观察所示。我们的结果表明,自旋极化放大可以实现在没有强自旋轨道相互作用的材料。
We report spin amplification using a capacitive beam splitter in n-type GaAs where the spin polarization is monitored via a transverse electron focusing measurement. It is shown that partially spin-polarized current injected by the emitter can be precisely controlled, and the spin polarization associated with it can be amplified by the beam splitter, such that a considerably high spin polarization of around 50% can be obtained. Additionally, the spin remains coherent as shown by the observation of quantum interference. Our results illustrate that spin-polarization amplification can be achieved in materials without strong spin-orbit interaction.
直接观察一维系统中交换驱动的自旋相互作用
DOI: 10.1063/1.4989374
发表时间: 2017
影响因子: 4
作者:
Yan C
通讯作者: Yan C
DOI: 10.1038/nnano.2014.296
发表时间: 2015-01-01
影响因子: 38.3
作者:
Chuang, Pojen;Ho, Sheng-Chin;Chen, Tse-Ming
通讯作者: Chen, Tse-Ming