Rodrigues, Leonarde N. and Arantes, A. and Schueller, C. and Bell, M. J. V. and Anjos, V. (2016) Resonant electronic Raman scattering: A BCS-like system. PHYSICAL REVIEW B, 93 (20): 205409. ISSN 2469-9950, 2469-9969
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In this paper we investigate the resonant intersubband Raman scattering of two-dimensional electron systems in GaAs-AlGaAs single quantum wells. Self-consistent calculations of the polarized and depolarized Raman cross sections show that the appearance of excitations at the unrenormalized single-particle energy are related to three factors: the extreme resonance regime, the existence of degeneracy in intersubband excitations of the electron gas, and, finally, degeneracy in the interactions between pairs of excitations. It is demonstrated that the physics that governs the problem is similar to the one that gives rise to the formation of the superconducting state in the BCS theory of normal metals. Comparison between experiment and theory shows an excellent agreement.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INELASTIC LIGHT-SCATTERING; GAAS QUANTUM-WELLS; EXCITATIONS; SPECTRA; GASES; FIELD; DOTS; |
| 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: | 21 Mar 2019 10:06 |
| Last Modified: | 21 Mar 2019 10:06 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2945 |
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