Spin transport study in a Rashba spin-orbit coupling system.
Spin transport study in a Rashba spin-orbit coupling system.
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Rashba 自旋轨道耦合系统中的自旋输运研究
DOI:
10.1038/srep04030
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发表时间:
2014-02-07
影响因子:
4.6
通讯作者:
Shen B
中科院分区:
文献类型:
--
作者:
Mei F;Zhang S;Tang N;Duan J;Xu F;Chen Y;Ge W;Shen B
One of the most important topics in spintronics is spin transport. In this work, spin transport properties of two-dimensional electron gas in AlxGa1-xN/GaN heterostructure were studied by helicity-dependent photocurrent measurements at room temperature. Spin-related photocurrent was detected under normal incidence of a circularly polarized laser with a Gaussian distribution. On one hand, spin polarized electrons excited by the laser generate a diffusive spin polarization current, which leads to a vortex charge current as a result of anomalous circular photogalvanic effect. On the other hand, photo-induced spin polarized electrons driven by a longitudinal electric field give rise to a transverse current via anomalous Hall Effect. Both of these effects originated from the Rashba spin-orbit coupling. By analyzing spin-related photocurrent varied with laser position, the contributions of the two effects were differentiated and the ratio of the spin diffusion coefficient to photo-induced anomalous spin Hall mobility Ds/μs= 0.08 V was extracted at room temperature.
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影响因子:
8.6
作者:
Hirsch, JE
通讯作者:
Hirsch, JE
影响因子:
3.7
作者:
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通讯作者:
Shen, Shun-Qing
影响因子:
8.6
作者:
Dyakonov, M. I.
通讯作者:
Dyakonov, M. I.
影响因子:
8.6
作者:
He, X. W.;Shen, B.;Wang, Z. G.
通讯作者:
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影响因子:
3.4
作者:
Miah, M. Idrish
通讯作者:
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