Crossover from Antiferromagnetic Phase to Fermiology Regime in a Weakly Coupled Half-Filled Chain System

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dc.creatorKishine, Jun-ichiro
dc.creatorYonemitsu, Kenji
dc.date1998-02-18
dc.date.accessioned2026-07-07T03:09:58Z
dc.date.available2026-07-07T03:09:58Z
dc.descriptionEffects of the electron-electron umklapp process on dimensional crossovers caused by the interchain one-particle hopping, $t_{\perp}$, in a weakly-coupled half-filled chain system have been studied, based on the perturbative renormalization-group approach. The variance of $t_\perp$ and the umklapp process under scaling is taken into account. We found that the intrachain umklapp process causes a finite crossover value of $t_\perp$, $t_{\perp cr}$. For $t_{\perp}<t_{\perp c}$, as the temperature decreases, the system undergoes a crossesover from the Tomonaga-Luttinger (TL) liquid to an incipient one-dimensional Mott insulator and finally makes a phase transition into an antiferromagnetic long-range-ordered phase at a transition temperature $T_{N}$ which increases with the increasing $t_{\perp}$. For $t_{\perp}>t_{\perp c}$, the system undergoes a crossesover from the TL liquid to the Fermiology regime where the interchain propagation of a quasi-particle is coherent. We discuss relevance of the present result to the experimentally suggested, pressure-induced crossover phenomena in the quasi-one-dimensional organic systems.
dc.description9 pages, 6 eps figures, uses jpsj.sty
dc.identifierhttps://arxiv.org/abs/cond-mat/9802186
dc.identifierhttp://arxiv.org/abs/cond-mat/9802186
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/28102
dc.subjectStrongly Correlated Electrons
dc.titleCrossover from Antiferromagnetic Phase to Fermiology Regime in a Weakly Coupled Half-Filled Chain System
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