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

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Byczuk K., Yu U., Hofstetter W., Vollhardt D.
Acta Physica Polonica A
|
2009
|
vol. 115
|
issue 1
7-12
EN
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.
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