Temperature dependence of the electron-spin-resonance spectrum of the chain-end S=1/2 modes in an S=1 antiferromagnetic chain

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)

URL: https://www.ncbi.nlm.nih.gov/pubmed/10000246
DOI: 10.1103/PhysRevB.45.5299

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: http://repository.cshl.edu/id/eprint/25856

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