Magnetic and superconducting correlations in the two-dimensional Hubbard model

被引：15
|
作者：
Metzner, W [1 ]
Reiss, J [1 ]
Rohe, D [1 ]
机构：
[1] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany
来源：
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2006年 / 243卷 / 01期
关键词：
D O I：
10.1002/pssb.200562445
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The interplay and competition of magnetic and superconducting correlations in the weakly interacting two-dimensional Hubbard Model is investigated by means of the functional renormalization group. At zero temperature the flow of interactions in one-loop approximation evolves into a strong coupling regime at low energy scales, signalling the possible onset of spontaneous symmetry breaking. This is further analyzed by a mean-field treatment of the strong renormalized interactions which takes into account magnetic and superconducting order simultaneously. The effect of strong correlations on single-particle properties in the normal phase is studied by calculating the flow of the self-energy. (c) 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：46 / 56
页数：11
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