Possibility of Gapless Spin Liquid State by One-dimensionalization
| dc.creator | Hayashi, Yuta | |
| dc.creator | Ogata, Masao | |
| dc.date | 2007-04-03 | |
| dc.date.accessioned | 2026-07-07T08:09:11Z | |
| dc.date.available | 2026-07-07T08:09:11Z | |
| dc.description | Motivated by the observation of a gapless spin liquid state in $κ$-(BEDT-TTF)$_2$Cu$_2$(CN)$_3$, we analyze the anisotropic triangular lattice $S=1/2$ Heisenberg model with the resonating valence bond mean-field approximation. Paying attention to the small quasi-one-dimensional anisotropy of the material, we take an approach from one-dimensional (1D) chains coupled with frustrating zig-zag bonds. By calculating one-particle excitation spectra changing anisotropy parameter $J'/J$ from the decoupled 1D chains to the isotropic triangular lattice, we find almost gapless excitations in the wide range from the 1D limit. This one-dimensionalization by frustration is considered to be a candidate for the mechanism of the gapless spin liquid state. | |
| dc.description | 4 pages, 4 figures(downsized), To appear in J. Phys. Soc. Jpn. | |
| dc.identifier | https://arxiv.org/abs/0704.0313 | |
| dc.identifier | http://arxiv.org/abs/0704.0313 | |
| dc.identifier | J.Phys.Soc.Jpn. 76 (2007) 053705. | |
| dc.identifier | doi:10.1143/JPSJ.76.053705 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/131464 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Possibility of Gapless Spin Liquid State by One-dimensionalization | |
| dc.type | text |