RANDOM SPIN-1 QUANTUM CHAINS

Authors
BOECHAT B SAGUIA A CONTINENTINO MA
Citation
B. Boechat et al., RANDOM SPIN-1 QUANTUM CHAINS, Solid state communications, 98(5), 1996, pp. 411-416
Citations number
14
Categorie Soggetti
Physics, Condensed Matter
Journal title
Solid state communications → ACNP
ISSN journal
00381098
Volume
98
Issue
5
Year of publication
1996
Pages
411 - 416
Database
ISI
SICI code
0038-1098(1996)98:5<411:RSQC>2.0.ZU;2-K
Abstract
We study disordered spin-1 quantum chains with random exchange and biq uadratic interactions using a real space renormalization group approac h. We find that the dimerized phase of the pure biquadratic model is u nstable and gives rise to a random singlet phase in the presence of we ak disorder. In the Haldane region of the phase diagram we obtain a qu ite different behavior.