Badalyan, S. M. and Matos-Abiague, A. and Fabian, J. and Vignale, G. and Peeters, F. M. (2013) Spin-orbit-interaction induced singularity of the charge density relaxation propagator. PHYSICAL REVIEW B, 88 (19): 195402. ISSN 1098-0121, 1550-235X
Full text not available from this repository. (Request a copy)Abstract
The charge density relaxation propagator of a two-dimensional electron system, which is the slope of the imaginary part of the polarization function, exhibits singularities for bosonic momenta having the order of the spin-orbit momentum and depending on the momentum orientation. We have provided an intuitive understanding for this nonanalytic behavior in terms of the interchirality subband electronic transitions, induced by the combined action of Bychkov-Rashba (BR) and Dresselhaus (D) spin-orbit coupling. It is shown that the regular behavior of the relaxation propagator is recovered in the presence of only one BR or D spin-orbit field or for spin-orbit interaction with equal BR and D coupling strengths. This creates a new possibility to influence carrier relaxation properties by means of an applied electric field.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRON-GAS; SEMICONDUCTORS; TEMPERATURE; RESONANCE; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Richter > Group Jaroslav Fabian |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 25 Mar 2020 11:23 |
| Last Modified: | 25 Mar 2020 11:23 |
| URI: | https://pred.uni-regensburg.de/id/eprint/15683 |
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