Simultaneous extraction of Rashba and Dresselhaus spin-orbit coefficients in GaAs/AlGaAs (110) two-dimensional electron gas

被引：0

作者：

Iizasa, Daisuke ^{[1
]}

Kitamura, Shu ^{[1
]}

Sato, Dai ^{[1
]}

Iba, Satoshi ^{[2
]}

Ohno, Yuzo ^{[3
]}

Karube, Shutaro ^{[1
,4
]}

Nitta, Junsaku ^{[1
,4
,5
]}

Kohda, Makoto ^{[1
,4
,5
]}

机构：

[1] Tohoku Univ, Dept Mat Sci, Sendai, Miyagi, Japan

[2] Natl Inst Adv Ind Sci & Technol, Spintron Res Ctr, Tokyo, Japan

[3] Univ Tsukuba, Grad Sch Pure & Appl Sci, Tsukuba, Ibaraki, Japan

[4] Tohoku Univ, Ctr Spintron Res Network, Sendai, Miyagi, Japan

[5] Tohoku Univ, Core Res Cluster, Ctr Sci & Innovat Spintron, Sendai, Miyagi, Japan

来源：

2019 COMPOUND SEMICONDUCTOR WEEK (CSW) | 2019年

关键词：

spin-orbit interaction; time-resolved Kerr rotation microscopy; two-dimensional electron gas;

D O I：

10.1109/iciprm.2019.8819207

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigate Rashba and Dresselhaus spin-orbit coefficients in (110)-grown GaAs/AlGaAs two-dimensional electron gas (2DEG) by employing time-resolved Kerr rotation microscopy. In III-V semiconductor 2DEG grown on (110) crystal orientation, while Dresselhaus spin-orbit field is perpendicular to the 2DEG plane, which maintains spin polarization, Rashba spin-orbit field randomizes spin polarization due to D'yakonov-Perel' spin relaxation mechanism. Therefore, it is important to evaluate both spin-orbit fields quantitatively. Here, we propose and examine the method for simultaneous extraction of Rashba and Dresselhaus fields in GaA/AlGaAs (110) 2DEG by employing spin diffusion.

引用

页数：2

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