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

页码：46 / 56

页数：11

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