Superconductivity in the two-dimensional generalized Hubbard model

被引：5

作者：

Lima, L. S. ^{[1
]}

机构：

[1] Ctr Fed Educ Tecnol Minas Gerais, Dept Fis & Matemat, BR-30510000 Belo Horizonte, MG, Brazil

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2016年 / 527卷

关键词：

Superconductivity; Two-dimensional; Hubbard model; HIGH-TEMPERATURE SUPERCONDUCTIVITY; ANISOTROPIC HEISENBERG-MODEL; SPIN TRANSPORT;

D O I：

10.1016/j.physc.2016.05.014

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have used the Green's functions method at finite temperature and the Kubo's formalism, to calculate the electron conductivity sigma(omega) in the generalized two-dimensional Hubbard model. We have obtained a behavior superconductor for the system to T > T-0. The AC conductivity falls to zero in omega - omega(0), where. 0 depends on Delta, which is the gap of the system. The behavior gotten is according of with the behavior of the superconductors of high T-c where there is a changes abruptly from a Mott's insulator state to superconductor. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：33 / 35

页数：3

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