PHONONS AND SPIN EXCITATIONS IN THE EXTENDED T-J MODEL

Authors
NORMAND B KOHNO R FUKUYAMA H
Citation
B. Normand et al., PHONONS AND SPIN EXCITATIONS IN THE EXTENDED T-J MODEL, Journal of low temperature physics, 99(3-4), 1995, pp. 531-533
Citations number
7
Categorie Soggetti
Physics, Applied
Journal title
Journal of low temperature physics → ACNP
ISSN journal
00222291
Volume
99
Issue
3-4
Year of publication
1995
Pages
531 - 533
Database
ISI
SICI code
0022-2291(1995)99:3-4<531:PASEIT>2.0.ZU;2-H
Abstract
We consider the effects of spin-phonon coupling within the slave-boson mean-field treatment of the extended t-J model. With no additional as sumptions the theory is found to give a semi-quantitative account of t he frequency and linewidth anomalies observed for certain phonon modes in YBa2Cu3O7 at the superconducting transition. We report also invest igations of the role of this coupling in affecting thermodynamic prope rties and spin dynamics.