PUASE DIAGRAM OF KONDO NECKLACIMODEL TO FINITE TEMPERATURE

Authors

  • D. Reyes Centro Brasileíro de Pesquisas Físicas- Rua Dr. Xavier Sígaud. /50-Urca, 22290-180,RJ- Brazil
  • A. Troper Centro Brasileíro de Pesquisas Físicas- Rua Dr. Xavier Sígaud. /50-Urca, 22290-180,RJ- Brazil
  • A. Saguia Centro Brasileíro de Pesquisas Físicas- Rua Dr. Xavier Sígaud. /50-Urca, 22290-180,RJ- Brazil
  • M. A. Contínentino Instituto de Física - Universidade Federal Fluminense, Av. Litoránea sin, Niterói, 24210-340, RJ -- Brazil

DOI:

https://doi.org/10.15381/rif.v8i01.8837

Keywords:

Kondo necklace, quantum critical point, rnagnclic tleld.

Abstract

A simplified version of the Kondo lattice model, thc Kondo necklace model, is studied at finite temperature using a representation for the localized and conduction electron spins in terms of local Kondo singlet and triplet operators. We calculate the double time Green's functions to get the dispersion relation of the excitations of the system. We show that in 3-d there is an antiferromagnetic ordered state at finite temperatures, but in 2-d long­ range magnetic order occurs only at T O.

Downloads

Published

2005-07-15

Issue

Vol. 8 No. 01 (2005)

Section

Article

License

Copyright (c) 2005 D. Reyes, A. Troper, A. Saguia, M. A. Contínentino

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

THE AUTHORS RETAIN THEIR RIGHTS:

a. The authors retain their trademark and patent rights, as well as any process or procedure described in the article.

b. The authors retain the right to share, copy, distribute, perform and publicly communicate the article published in the Revista de Investigación de Física (for example, place it in an institutional repository or publish it in a book), with an acknowledgment of its initial publication in the Revista de Investigación de Física.

c. The authors retain the right to make a subsequent publication of their work, to use the article or any part of it (for example: a compilation of their works, notes for conferences, thesis, or for a book), provided that they indicate the source. of publication (authors of the work, journal, volume, number and date).

How to Cite

PUASE DIAGRAM OF KONDO NECKLACIMODEL TO FINITE TEMPERATURE. (2005). Revista De Investigación De Física, 8(01), 21-23. https://doi.org/10.15381/rif.v8i01.8837