Spin-triplet pairing instability of the spinon Fermi surface in a U(1) spin liquid
Strongly Correlated Electrons
2009-11-13 v1 Superconductivity
Abstract
Recent experiments on the organic compound \kappa-(ET)_2Cu_2(CN)_3 have provided a promising example of a two dimensional spin liquid state. This phase is described by a two-dimensional spinon Fermi sea coupled to a U(1) gauge field. We study Kohn-Luttinger-like pairing instabilities of the spinon Fermi surface due to singular interaction processes with twice-the-Fermi-momentum transfer. We find that under certain circumstances the pairing instability occurs in odd-orbital-angular-momentum/spin-triplet channels. Implications to experiments are discussed.
Keywords
Cite
@article{arxiv.0707.4031,
title = {Spin-triplet pairing instability of the spinon Fermi surface in a U(1) spin liquid},
author = {Victor Galitski and Yong Baek Kim},
journal= {arXiv preprint arXiv:0707.4031},
year = {2009}
}
Comments
4 pages, 1 figure