Schoenhuber, C. and Walser, M. P. and Salis, G. and Reichl, C. and Wegscheider, W. and Korn, T. and Schueller, C. (2014) Inelastic light-scattering from spin-density excitations in the regime of the persistent spin helix in a GaAs-AlGaAs quantum well. PHYSICAL REVIEW B, 89 (8): 085406. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
We have investigated the intrasubband spin-density excitation (SDE) in an asymmetrically doped GaAs-AlGaAs single quantum well with balanced Rashba and Dresselhaus spin-orbit interaction strengths by inelastic light scattering. For this unique symmetry, the combined spin-orbit field is either parallel or antiparallel to the [1 (1) over bar0] in-plane direction of the quantum well for all wave vectors of the two-dimensional reciprocal space. In backscattering geometry, the SDE is formed by spin-flip intrasubband transitions of the spin-split subband. Via the splitting of the intrasubband SDE, we have directly detected the spin splitting of the conduction band due to the anisotropic spin-orbit field. As expected, the splitting is nonzero if a wave vector is transferred perpendicular to the direction of the spin-orbit field and close to zero for a parallel wave-vector transfer. The extracted values for the spin-orbit strength and for the wavelength of a persistent spin helix compare well with results of previous experiments of direct spatial mapping of the spin helix.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RAMAN-SCATTERING; ELECTRON-GAS; ORIENTATION; ANISOTROPY; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Lupton > Group Christian Schüller |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 27 Nov 2019 10:11 |
| Last Modified: | 27 Nov 2019 10:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10681 |
Actions (login required)
 |
View Item |
