Mitra, P. P., Halperin, B. I., Affleck, I. (1992) Temperature dependence of the electron-spin-resonance spectrum of the chain-end S=1/2 modes in an S=1 antiferromagnetic chain. Physical Review B, 45 (10). pp. 5299-5306. ISSN 01631829 (ISSN)
Abstract
The S=1/2 degrees of freedom, which have been predicted to occur at the ends of an S=1 Heisenberg-like antiferromagnetic chain, have been observed recently in low-temperature ESR measurements of Ni(C2H8N2)2NO2ClO4 (abbreviated NENP) containing selected impurities. The signal was found to decrease rapidly with temperature, at temperatures well below the Haldane gap. We present here a theoretical analysis of the loss of ESR signal due to the presence of thermal spin excitations on the chain, which can at least qualitatively explain the experiment. © 1992 The American Physical Society.
| Item Type: | Paper |
|---|---|
| Subjects: | Investigative techniques and equipment > magnetic resonance imaging physics |
| CSHL Authors: | |
| Communities: | CSHL labs > Mitra lab |
| Depositing User: | CSHL Librarian |
| Date: | 1992 |
| Date Deposited: | 02 Apr 2012 20:07 |
| Last Modified: | 10 Feb 2017 20:51 |
| Related URLs: | |
| URI: | https://repository.cshl.edu/id/eprint/25856 |
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