Pseudogap opening in the 2D Hubbard model within COM (SCBA)

被引：1

作者：

Avella, Adolfo ^{[1
]}

Mancini, Ferdinando ^{[1
]}

机构：

[1] Univ Salerno, Dipartimento Fis ER Caianiello, Unita CNISM Salerno, I-84081 Baronissi, SA, Italy

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2007年 / 460卷 / SPEC. ISS.期

关键词：

pseudogapCuprates; Hubbard model; strongly correlated systems; composite operator method;

D O I：

10.1016/j.physc.2007.03.225

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the two-dimensional Hubbard model by means of the Composite Operator Method (COM) within the Self-Consistent Born Approximation (SCBA) for the electronic self-energy. We have analyzed the complex features of the spectral function and the Fermi surface on varying the filling. At high doping, we have found the ordinary behavior of a weakly-correlated metal. For low doping, we have found instead the opening of a pseudogap as reported for cuprates superconductors. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1096 / 1097

页数：2

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