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.
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页数：2
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