Schliemann, John (2010) Spins coupled to a spin bath: From integrability to chaos. PHYSICAL REVIEW B, 81 (8): 081301. ISSN 2469-9950, 2469-9969
Full text not available from this repository.Abstract
Motivated by the hyperfine interaction of electron spins with surrounding nuclei, we investigate systems of central spins coupled to a bath of noninteracting spins in the framework of random matrix theory. With increasing number of central spins a transition from Poissonian statistics to the Gaussian orthogonal ensemble occurs which can be described by a generalized Brody distribution. These observations are unaltered upon applying an external magnetic field. In the transition region, the classical counterparts of the models studied have mixed phase space.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | QUANTUM DOTS; COHERENT DYNAMICS; ELECTRON; MODELS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Grifoni > Group John Schliemann |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Aug 2020 09:28 |
| Last Modified: | 10 Aug 2020 09:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/25266 |
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