Spontaneous Vortex Phase in the Bosonic RVB Theory
Abstract
In the description of spin-charge separation based on the phase string theory of the t-J model, spinon excitations are vortices in the superconducting state. Thermally excited spinons destroy phase coherence, leading to a new phase characterized by the presence of free spinon vortices at temperatures, T_c<T<T_v. The temperature scale T_v at which holon condensation occurs marks the onset of pairing amplitude, and is related to the spin pseudogap temperature T^*. The phase below T_v, called the spontaneous vortex phase, shows novel transport properties before phase coherence sets in at T_c. We discuss the Nernst effect as an intrinsic characterization of such a phase, in comparison with recent experimental measurements.
Cite
@article{arxiv.cond-mat/0202079,
title = {Spontaneous Vortex Phase in the Bosonic RVB Theory},
author = {Z. Y. Weng and V. N. Muthukumar},
journal= {arXiv preprint arXiv:cond-mat/0202079},
year = {2009}
}
Comments
9 pages, 3 figures embedded