Title | Spin-triplet pairing instability of the spinon fermi surface in a U(1) spin liquid |
Publication Type | Journal Article |
Year of Publication | 2007 |
Authors | V. M. Galitski, and Y B. Kim |
Journal | Phys. Rev. Lett. |
Volume | 99 |
Pagination | 266403 |
Date Published | dec |
ISSN | 0031-9007 |
Keywords | 2007, Single Fellow |
Abstract | Recent experiments on the organic compound kappa-(ET)2Cu2(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 or spin-triplet channels. Implications to experiments are discussed. |
URL | http://www.ncbi.nlm.nih.gov/pubmed/18233593 |