Persistent current of correlated electrons in mesoscopic ring with impurity

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dc.creatorKrcmar, Roman
dc.creatorGendiar, Andrej
dc.creatorMosko, Martin
dc.creatorNemeth, Radoslav
dc.creatorVagner, Pavel
dc.creatorMitas, Lubos
dc.date2007-12-06
dc.date.accessioned2026-07-07T09:29:03Z
dc.date.available2026-07-07T09:29:03Z
dc.descriptionThe persistent current of correlated electrons in a continuous one-dimensional ring with a single scatterer is calculated by solving the many-body Schrodinger equation for several tens of electrons interacting via the electron-electron (e-e) interaction of finite range. The problem is solved by the configuration-interaction (CI) and diffusion Monte Carlo (DMC) methods. The CI and DMC results are in good agreement. In both cases, the persistent current $I$ as a function of the ring length $L$ exhibits the asymptotic dependence $I \propto L^{-1-α}$ typical of the Luttinger liquid, where the power $α$ depends only on the e-e interaction. The numerical values of $α$ agree with the known formula of the renormalisation-group theory.
dc.descriptionConference proceedings. Accepted for publication in Physica E
dc.identifierhttps://arxiv.org/abs/0712.0960
dc.identifierhttp://arxiv.org/abs/0712.0960
dc.identifierPhysica E 40 (2008) 1507
dc.identifierdoi:10.1016/j.physe.2007.09.074
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/157645
dc.subjectMesoscale and Nanoscale Physics
dc.titlePersistent current of correlated electrons in mesoscopic ring with impurity
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