Coherence Lengths for Superconductivity in the Two-Orbital Negative-U Hubbard Model

被引：13

作者：

Litak, G. ^{[1
]}

Oerd, T. ^{[2
]}

Raego, K. ^{[2
]}

Vargunin, A. ^{[2
]}

机构：

[1] Lublin Univ Technol, Fac Mech Engn, PL-20618 Lublin, Poland

[2] Univ Tartu, Inst Phys, EE-51010 Tartu, Estonia

来源：

ACTA PHYSICA POLONICA A | 2012年 / 121卷 / 04期

关键词：

GINZBURG-LANDAU EQUATIONS;

D O I：

10.12693/APhysPolA.121.747

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the peculiarities of coherency in the superconductivity of two-orbital system. The superconducting phase transition is caused here by the on-site intra-orbital attractions (negative-U Hubbard model) and interorbital pair-transfer interaction. The dependencies of critical and non-critical correlation lengths on interaction channels and band fillings are analyzed.

引用

页码：747 / 751

页数：5

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