Ferromagnetism and Metal-Insulator Transitions in Correlated Electron Systems with Alloy Disorder

被引：1
|
作者：
Byczuk, K. [1 ,2 ]
Yu, U. [1 ]
Hofstetter, W. [3 ]
Vollhardt, D. [1 ]
机构：
[1] Univ Augsburg, Ctr Elect Correlat & Magnetism, Inst Phys, D-86135 Augsburg, Germany
[2] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland
[3] Univ Frankfurt, Inst Theoret Phys, D-60438 Frankfurt, Germany
来源：
ACTA PHYSICA POLONICA A | 2009年 / 115卷 / 01期
关键词：
DYNAMICAL MEAN-FIELD; HUBBARD-MODEL;
D O I：
10.12693/APhysPolA.115.7
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Alloy disorder can affect ferromagnetism and metal insulator transitions of correlated lattice fermion systems in subtle and often unexpected ways. Solving the Hubbard model and the periodic Anderson model within dynamical mean-field theory we show that alloy disorder can increase the Curie temperature of a non-disordered system, and also yields novel Mott or Kondo insulators at fractional electronic densities.
引用
收藏
页码：7 / 12
页数：6
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