Spin-charge separation: From one hole to finite doping
Strongly Correlated Electrons
2007-05-23 v1
Abstract
In the presence of nonlocal phase shift effects, a quasiparticle can remain topologically stable even in a spin-charge separation state due to the confinement effect introduced by the phase shifts at finite doping. True deconfinement only happens in the zero-doping limit where a bare hole can lose its integrity and decay into holon and spinon elementary excitations. The Fermi surface structure is completely different in these two cases, from a large band-structure-like one to four Fermi points in one-hole case, and we argue that the so-called underdoped regime actually corresponds to a situation in between.
Cite
@article{arxiv.cond-mat/0101411,
title = {Spin-charge separation: From one hole to finite doping},
author = {Z. Y. Weng and D. N. Sheng and C. S. Ting},
journal= {arXiv preprint arXiv:cond-mat/0101411},
year = {2007}
}
Comments
4 pages, 2 figures, presented in M2S-HTSC-VI conference (2000)