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
收藏
页码：747 / 751
页数：5
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