CHARGE-TRANSFER GAP FROM A MONTE-CARLO SIMULATION OF THE 3-BAND HUBBARD-MODEL

被引：11

作者：

DOPF, G

KRAFT, T

MURAMATSU, A

HANKE, W

机构：

[1] Physikalisches Institut, Universität Würzburg, Würzburg, D-8700, Am Hubland

来源：

PHYSICA B | 1990年 / 165卷

关键词：

D O I：

10.1016/S0921-4526(09)80093-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied a three-band Hubbard model describing the CuO2 layers in the high-Tc superconductors via Quantum Monte Carlo simulations. For a Hubbard interaction Ud = 6 on the copper sites (in units of the Cu-O hybridization tCu−O), we see the formation of a correlation gap depending on the size of the charge-transfer energy Δ = εp − εd. For inverse temperatures as low as β = 10 we study the behavior of the charge-transfer gap as a function of the parameters Δ, Up and of the O-O hopping matrix element to-o. © 1990, Elsevier Science Publishers B.V. (North-Holland). All rights reserved.

引用

页码：1015 / 1016

页数：2

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