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Persistent current for a Luttinger liquid

1993; American Physical Society; Volume: 47; Issue: 12 Linguagem: Inglês

10.1103/physrevb.47.7591

1095-3795

D. Schmeltzer,

Magnetic properties of thin films

We compute the current for a Luttinger ring treated by a magnetic flux at T=0 and T\ensuremath{\ne}0. We find that the current depends on the stiffness. The current is reduced with increase of the interaction strength and size of the ring. A scaling law, which relates the current in the presence of interaction to the noninteracting case, is obtained.