Experimental separation of Rashba and Dresselhaus spin splittings in semiconductor quantum wells

Ganichev, Sergey D. and Bel'kov, V. V. and Golub, L. E. and Ivchenko, E. L. and Schneider, Petra and Giglberger, S. and Eroms, J. and De Boeck, J. and Borghs, G. and Wegscheider, Werner and Weiss, D. and Prettl, W. (2004) Experimental separation of Rashba and Dresselhaus spin splittings in semiconductor quantum wells. PHYSICAL REVIEW LETTERS, 92 (25): 256601. ISSN 0031-9007,

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Abstract

The relative strengths of Rashba and Dresselhaus terms describing the spin-orbit coupling in semiconductor quantum well (QW) structures are extracted from photocurrent measurements on n-type InAs QWs containing a two-dimensional electron gas (2DEG). This novel technique makes use of the angular distribution of the spin-galvanic effect at certain directions of spin orientation in the plane of a QW. The ratio of the relevant Rashba and Dresselhaus coefficients can be deduced directly from experiment and does not relay on theoretically obtained quantities. Thus our experiments open a new way to determine the different contributions to spin-orbit coupling.

Item Type: Article
Uncontrolled Keywords: RELAXATION ANISOTROPY; INVERSION ASYMMETRY; INTERFACE ASYMMETRY; ORBIT INTERACTION; ELECTRON-GAS; HETEROSTRUCTURES; SUBBAND; ORIENTATION; SYSTEMS;
Subjects: 500 Science > 530 Physics
Divisions: Physics > Institute of Experimental and Applied Physics > Professor Ganichev > Group Sergey Ganichev
Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider
Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Dieter Weiss
Depositing User: Dr. Gernot Deinzer
Date Deposited: 12 Jul 2021 12:31
Last Modified: 12 Jul 2021 12:31
URI: https://pred.uni-regensburg.de/id/eprint/37531

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