LOW-TEMPERATURE SPECIFIC-HEAT OF A RANDOM HEISENBERG CHAIN IN THE LARGE-S LIMIT

Authors
AVGIN I HUBER DL
Citation
I. Avgin et Dl. Huber, LOW-TEMPERATURE SPECIFIC-HEAT OF A RANDOM HEISENBERG CHAIN IN THE LARGE-S LIMIT, Physical review. B, Condensed matter, 56(5), 1997, pp. 2320-2321
Citations number
7
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
56
Issue
5
Year of publication
1997
Pages
2320 - 2321
Database
ISI
SICI code
0163-1829(1997)56:5<2320:LSOARH>2.0.ZU;2-L
Abstract
Results are presented for the low-temperature specific heat of a disor dered Heisenberg chain with random +/-J interactions in the large-spin limit. The specific heat varies at T-2/3 with a coefficient that depe nds on the relative fractions of positive and negative bonds. The coef ficient is calculated exactly for the equal-probability distribution. There is also a brief analysis of the destabilizing effects of an appl ied magnetic field.