Dimensional tuning of electronic states under strong and frustrated interactions

Chisa Hotta, Frank Pollmann

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

10 Zitate (Scopus)

Abstract

We study a model of strongly interacting spinless fermions on an anisotropic triangular lattice. At half-filling and the limit of strong repulsive nearest-neighbor interactions, the fermions align in stripes and form an insulating state. When a particle is doped, it either follows a one-dimensional free motion along the stripes or fractionalizes perpendicular to the stripes. The two propagations yield a dimensional tuning of the electronic state. We study the stability of this phase and derive an effective model to describe the low-energy excitations. Spectral functions are presented which can be used to experimentally detect signatures of the charge excitations.

OriginalspracheEnglisch
Aufsatznummer186404
FachzeitschriftPhysical Review Letters
Jahrgang100
Ausgabenummer18
DOIs
PublikationsstatusVeröffentlicht - 8 Mai 2008
Extern publiziertJa

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