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Parity effects in a Luttinger liquid : diamagnetic and paramagnetic ground states

Loss, D.. (1992) Parity effects in a Luttinger liquid : diamagnetic and paramagnetic ground states. Physical review letters, Vol. 69, H. 2. pp. 343-346.

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Official URL: http://edoc.unibas.ch/dok/A5254799

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Abstract

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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Bibsysno:Link to catalogue
Publisher:American Physical Society
ISSN:0031-9007
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:22 Mar 2012 14:26
Deposited On:22 Mar 2012 13:52

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