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
收藏
页码：1096 / 1097
页数：2
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