THE XY-MODEL ON THE ONE-DIMENSIONAL SUPERLATTICE

Authors
GONCALVES LL DELIMA JP
Citation
Ll. Goncalves et Jp. Delima, THE XY-MODEL ON THE ONE-DIMENSIONAL SUPERLATTICE, Journal of magnetism and magnetic materials, 140, 1995, pp. 1606-1608
Citations number
6
Categorie Soggetti
Material Science","Physics, Condensed Matter
Journal title
Journal of magnetism and magnetic materials → ACNP
ISSN journal
03048853
Volume
140
Year of publication
1995
Part
3
Pages
1606 - 1608
Database
ISI
SICI code
0304-8853(1995)140:<1606:TXOTOS>2.0.ZU;2-0
Abstract
The XY-model (S = 1/2) on the one-dimensional superlattice (closed cha in) is considered. The exact solution of the model is obtained by usin g a generalized Jordan-Wigner transformation and the Green function te chnique. Special attention is given to the study of the excitation spe ctrum and the results are compared with those obtained by using the tr ansfer matrix technique for the ferromagnetic case only. The thermodyn amic properties are also studied and an explicit solution for the inte rnal energy is presented.