Precursor of antiferromagnetic bands in the half-filled two-dimensional Hubbard model

被引：1

作者：

Kyung, B ^{[1
]}

机构：

[1] Max Planck Inst Phys Complex Syst, D-01187 Dresden, Germany

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1999年 / 13卷 / 27期

关键词：

D O I：

10.1142/S0217979299002940

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We study the half-filled two-dimensional Hubbard model in the intermediate coupling regime. As temperature is decreased for a two-dimensional half-filled band, two-dimensional critical fluctuations give rise to a strong local maximum in \Im Sigma(k(F), omega)\ at omega = 0, leading to a split peak with a pseudogap inside in the spectral function and the density of states. The calculated energy dispersion is in good agreement with that of spin density wave approximation.

引用

页码：3183 / 3192

页数：10

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