A strong effect of disorder on Mott transition:: Hubbard-Lloyd model

被引：0
|
作者：
Spalek, J
Wójcik, W
机构：
[1] Jagiellonian Univ, Marian Smoluchowski Inst Phys, PL-30059 Krakow, Poland
[2] Tadeusz Kosiuszko Tech Univ, Inst Phys, PL-30084 Krakow, Poland
来源：
ACTA PHYSICA POLONICA B | 2003年 / 34卷 / 02期
关键词：
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We include atomic disorder in correlated narrow-band systems by assuming that the atomic level position fluctuates according to the Lorentzian distribution. We use the Lloyd exact form of the averaged single-particle Green function when the electronic correlations are absent or treated in the saddle-point slave-boson (or Gutzwiller) approximation. The weak disorder reduces drastically the threshold for the Mott-Hubbard localization.
引用
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页码：399 / 402
页数：4
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