Ferromagnetism and metal-insulator transition in the disordered Hubbard model

Ferromagnetism and metal-insulator transition in the disordered Hubbard model

A detailed study of the paramagnetic to ferromagnetic phase transition in the one-band Hubbard model in the presence of binary-alloy disorder is presented. The influence of the disorder (with concentrations x and 1-x of the two alloy ions) on the Curie temperature T(c) is found to depend strongly on...

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Veröffentlicht in:Physical review letters 2003-05, Vol.90 (19), p.196403-196403, Article 196403
Hauptverfasser: Byczuk, Krzysztof, Ulmke, Martin, Vollhardt, Dieter
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container_title Physical review letters
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creator Byczuk, Krzysztof
Ulmke, Martin
Vollhardt, Dieter
description A detailed study of the paramagnetic to ferromagnetic phase transition in the one-band Hubbard model in the presence of binary-alloy disorder is presented. The influence of the disorder (with concentrations x and 1-x of the two alloy ions) on the Curie temperature T(c) is found to depend strongly on electron density n. While at high densities, n>x, the disorder always reduces T(c); at low densities, n
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title Ferromagnetism and metal-insulator transition in the disordered Hubbard model
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