All-optical evaluation of spin-orbit interaction based on diffusive spin motion in a two-dimensional electron gas

被引:17
作者
Kohda, M. [1 ,2 ]
Altmann, P. [1 ]
Schuh, D. [3 ]
Ganichev, S. D. [3 ]
Wegscheider, W. [4 ]
Salis, G. [1 ]
机构
[1] IBM Res Zurich, CH-8803 Ruschlikon, Switzerland
[2] Tohoku Univ, Dept Mat Sci, Sendai, Miyagi 9808579, Japan
[3] Univ Regensburg, Inst Expt & Appl Phys, D-93040 Regensburg, Germany
[4] ETH, Solid State Phys Lab, CH-8093 Zurich, Switzerland
基金
瑞士国家科学基金会;
关键词
MAGNETIC-FIELDS; SEMICONDUCTORS; HELIX;
D O I
10.1063/1.4934671
中图分类号
O59 [应用物理学];
学科分类号
摘要
A method is presented that enables the measurement of spin-orbit coefficients in a diffusive two-dimensional electron gas without the need for processing the sample structure, applying electrical currents or resolving the spatial pattern of the spin mode. It is based on the dependence of the average electron velocity on the spatial distance between local excitation and detection of spin polarization, resulting in a variation of spin precession frequency that in an external magnetic field is linear in the spatial separation. By scanning the relative positions of the exciting and probing spots in a time-resolved Kerr rotation microscope, frequency gradients along the [100] and [010] crystal axes of GaAs/AlGaAs QWs are measured to obtain the Rashba and Dresselhaus spin-orbit coefficients, alpha and beta. This simple method can be applied in a variety of materials with electron diffusion for evaluating spin-orbit coefficients. (C) 2015 AIP Publishing LLC.
引用
收藏
页数:4
相关论文
共 50 条
[21]   Gauge theory approach for diffusive and precessional spin dynamics in a two-dimensional electron gas [J].
Tokatly, I. V. ;
Sherman, E. Ya .
ANNALS OF PHYSICS, 2010, 325 (05) :1104-1117
[22]   Collapses and revivals of spin polarization quantum oscillations in two-dimensional systems of spin 1/2 charged particles with spin-orbit interaction [J].
Maslova, N. S. ;
Mantsevich, V. N. ;
Sokolov, I. M. ;
Arseyev, P. I. .
PHYSICAL REVIEW E, 2024, 110 (04)
[23]   Cubic Rashba Spin-Orbit Interaction of a Two-Dimensional Hole Gas in a Strained-Ge/SiGe Quantum Well [J].
Moriya, Rai ;
Sawano, Kentarou ;
Hoshi, Yusuke ;
Masubuchi, Satoru ;
Shiraki, Yasuhiro ;
Wild, Andreas ;
Neumann, Christian ;
Abstreiter, Gerhard ;
Bougeard, Dominique ;
Koga, Takaaki ;
Machida, Tomoki .
PHYSICAL REVIEW LETTERS, 2014, 113 (08)
[24]   Thermally induced spin polarization and thermal conductivities in a spin-orbit-coupled two-dimensional electron gas [J].
Wang, C. M. ;
Pang, M. Q. .
SOLID STATE COMMUNICATIONS, 2010, 150 (33-34) :1509-1513
[25]   Spin Hall effect and spin current generation in two-dimensional systems with random Rashba spin-orbit coupling [J].
Dugaev, V. K. ;
Inglot, M. ;
Sherman, E. Ya. ;
Barnas, J. .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2012, 324 (21) :3573-3575
[26]   Spin-orbit coupling and transport in strongly correlated two-dimensional systems [J].
Huang, Jian ;
Pfeiffer, L. N. ;
West, K. W. .
PHYSICAL REVIEW B, 2017, 95 (19)
[27]   Understanding spin Hall effect in two-dimensional fermionic systems with generic spin-orbit interaction in III-V heterostructures [J].
Paul, Boudhayan ;
Ghosh, Tarun Kanti .
PHYSICS LETTERS A, 2015, 379 (07) :728-731
[28]   Energy spectrum and specific heat of two-dimensional electron systems with spin-orbit interaction in a magnetic field parallel to the conducting layer [J].
Shevchenko, O. S. ;
Kopeliovich, A. I. .
LOW TEMPERATURE PHYSICS, 2016, 42 (03) :196-203
[29]   Drude weight and optical conductivity of a two-dimensional heavy-hole gas with k-cubic spin-orbit interactions [J].
Mawrie, Alestin ;
Ghosh, Tarun Kanti .
JOURNAL OF APPLIED PHYSICS, 2016, 119 (04)
[30]   Conductance measurement of spin-orbit coupling in two-dimensional electron systems with an in-plane magnetic field [J].
Kolasinski, K. ;
Sellier, H. ;
Szafran, B. .
PHYSICAL REVIEW B, 2016, 94 (12)