Dimensional tuning of electronic states under strong and frustrated interactions
Strongly Correlated Electrons
2009-11-13 v2
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.
Keywords
Cite
@article{arxiv.0711.3075,
title = {Dimensional tuning of electronic states under strong and frustrated interactions},
author = {Chisa Hotta and Frank Pollmann},
journal= {arXiv preprint arXiv:0711.3075},
year = {2009}
}
Comments
4pages 4figures included. to appear in Phys. Rev. Lett. vol. 100