Quasiparticle excitations in frustrated antiferromagnets
Abstract
We have computed the quasiparticle wave function corresponding to a hole injected in a triangular antiferromagnet. We have taken into account multi-magnon contributions within the self consistent Born approximation. We have found qualitative differences, under sign reversal of the integral transfer t, regarding the multi-magnon components and the own existence of the quasiparticle excitations. Such differences are due to the subtle interplay between magnon-assisted and free hopping mechanisms. We conclude that the conventional quasiparticle picture can be broken by geometrical frustration without invoking spin liquid phases.
Keywords
Cite
@article{arxiv.cond-mat/0410209,
title = {Quasiparticle excitations in frustrated antiferromagnets},
author = {A. E. Trumper and C. J. Gazza and L. O. Manuel},
journal= {arXiv preprint arXiv:cond-mat/0410209},
year = {2009}
}
Comments
5 pages, 4 figures, presented at " At the Frontiers of the condensed Matter II, Buenos Aires. June, 2004 ". To be published in Physica B