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Article Dans Une Revue Journal de Physique I Année : 1993

Screening of an external magnetic field by spin currents: the infinite U Hubbard model

Benoît Douçot

Résumé

The infinite U Hubbard model with a single hole in the presence of an external orbital magnetic field is studied on a finite cluster for several geometries. Exact diagonalization results for the energy, total spin and several spin correlation functions are presented. They strongly support the idea of the compensation of the applied flux by a flictitious flux induced by a non-coplanar spin background. A variational study also shows evidence of this phenomenon.

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jpa-00246737 , version 1 (04-02-2008)

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Jean-Christian Anglès d'Auriac, Benoît Douçot. Screening of an external magnetic field by spin currents: the infinite U Hubbard model. Journal de Physique I, 1993, 3 (2), pp.501-513. ⟨10.1051/jp1:1993146⟩. ⟨jpa-00246737⟩

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