The doping dependence of magnetic ordering in the t-J model with classical spins

Persistent currents in mesoscopic metallic rings induced by static magnetic fields are investigated by means of a Hamiltonian which incorporates diagonal disorder and the electron-electron interaction through a Hubbard term (U ).Correlations are included up to second order perturbation theory which is shown to work accurately for U of the order of the hopping integral. If disorder is not very strong, interactions increase the current up to near its value for a clean metal. Averaging over ring lengths eliminates the first Fourier component of the current and reduces its value, which remains low after interactions are included.

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Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings

Chiappe

Vergés

Louis

1996

Solid State Communications

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The doping dependence of magnetic ordering in the t-J model with classical spins

Cited by 1 publication

References 2 publications

Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings

Recovery of the persistent current induced by the electron-electron interaction in mesoscopic metallic rings

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