PARITY EFFECTS IN A LUTTINGER LIQUID - DIAMAGNETIC AND PARAMAGNETIC GROUND-STATES

被引：206

作者：

LOSS, D

机构：

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 02期

关键词：

D O I：

10.1103/PhysRevLett.69.343

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The concept of a Luttinger liquid in 1 D is extended to include twisted boundary conditions on a ring and mesoscopic parity effects due to evenness and oddness of the particle number N0. Using Haldane's notion of topological excitations, a proof of Leggett's conjecture is presented, stating that the ground state of interacting 1 D quantum systems is diamagnetic or paramagnetic depending on the parity of N0. The persistent currents produced by an Aharonov-Bohm flux are calculated and shown to have period and amplitude that are in agreement with recent experiments.

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页码：343 / 346

页数：4

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