Wu XG, Peeters FM, Wang YJ, McCombe BD. Blocking of the polaron effect and spin-split cyclotron resonance in a two-dimensional electron Gas.
PHYSICAL REVIEW LETTERS 2000;
84:4934-4937. [PMID:
10990835 DOI:
10.1103/physrevlett.84.4934]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/1999] [Indexed: 05/23/2023]
Abstract
Cyclotron resonance (CR) of high density GaAs quantum wells exhibits well-resolved spin splitting above the LO-phonon frequency. The spin-up and spin-down CR frequencies are reversed relative to the order expected from simple band nonparabolicity. We demonstrate that this is a consequence of the blocking of the polaron interaction which is a sensitive function of the filling of the Landau levels.
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