Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-06-26
Phys. Lett. A 319, 114 (2003)
Physics
Condensed Matter
Strongly Correlated Electrons
7 pages, 1 figure
Scientific paper
We study a recent generalization proposed for the XY model in two and three dimensions. Using both, the continuum limit and discrete lattice, we obtained the vortex configuration and shown that out-of-plane vortex solutions are deeply jeopardized whenever the parameter of generalization, $L$, is increased. The critical temperature for such models is calculated using the self consistent harmonic approximation. In both, two- and three-dimensional cases, such a temperature decreases with raising $L$. Our results are also compared with other approximated methods available in the literature.
Mol Lucas A. S.
Moura-Melo Winder A.
Pereira Afranio Rodrigues
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