Eom, J. and Cho, H. and Kang, W. and Campman, K. L. and Gossard, A. C. and Bichler, T. and Wegscheider, Werner (2000) Quantum Hall ferromagnetism in a two-dimensional electron system. SCIENCE, 289 (5488). pp. 2320-2323. ISSN 0036-8075
Full text not available from this repository. (Request a copy)Abstract
Experiments on a nearly spin degenerate two-dimensional electron system reveals unusual hysteretic and relaxational transport in the fractional quantum Hall effect regime. The transition between the spin-polarized (with fill fraction nu = 1/3) and spin-unpolarized (nu = 2/5) states is accompanied by a complicated series of hysteresis. loops reminiscent of a classical, ferromagnet, In correlation with the hysteresis, magnetoresistance can either grow or decay Logarithmically in time with remarkable persistence and does not saturate. In contrast to the established models of relaxation, the relaxation rate exhibits an anomalous divergence as temperature is reduced. These results indicate the presence of novel two-dimensional ferromagnetism with a complicated magnetic domain dynamic.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | PHASE-TRANSITIONS; MAGNETIC-RELAXATION; GROUND-STATES; LANDAU-LEVEL; SPIN; HETEROSTRUCTURES; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 23 Mar 2022 07:28 |
| Last Modified: | 23 Mar 2022 07:28 |
| URI: | https://pred.uni-regensburg.de/id/eprint/42199 |
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