Phase transition from a d(x(2)-y(2)) to d(x(2)-y(2))+id(xy) superconductor

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Data

1998-12-20

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Coorientador

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Curso de graduação

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Editor

Elsevier B.V.

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Artigo

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Acesso restrito

Resumo

The temperature dependencies of specific heat and spin susceptibility of a coupled dx2-y2 + idxy superconductor in the presence of a weak dxy component are investigated in the tight-binding model (1) on square lattice and (2) on a lattice with orthorhombic distortion. As the temperature is lowered past the critical temperature Tc, first a less ordered dx2-y2 superconductor is created, which changes to a more ordered dx2-y2 + idxy superconductor at Tcl(< Tc). This manifests in two second order phase transitions identified by two jumps in specific heat at Tc and Tc1. The temperature dependencies of the superconducting observables exhibit a change from power-law to exponential behavior as temperature is lowered below Tc1 and confirm the new phase transition. © 1998 Published by Elsevier Science B.V. All rights reserved.

Descrição

Palavras-chave

dx2-y2 + idxy-wave superconductor, Specific heat, Susceptibility, Crystal lattices, Mathematical models, Phase transitions, Specific heat of solids, Superconducting transition temperature, Thermal effects, Coupled wave superconductors, Tight-binding model, High temperature superconductors

Idioma

Inglês

Como citar

Physica C: Superconductivity and its Applications, v. 309, n. 3-4, p. 251-256, 1998.

URI

http://hdl.handle.net/11449/132400

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Coleções

São Paulo - IFT - Instituto de Física Teórica