Spin liquid phase in a $S=1/2$ quantum magnet on the kagome lattice
| dc.creator | Isakov, S. V. | |
| dc.creator | Kim, Yong Baek | |
| dc.creator | Paramekanti, A. | |
| dc.date | 2006-07-28 | |
| dc.date | 2006-11-22 | |
| dc.date.accessioned | 2026-07-07T07:16:13Z | |
| dc.date.available | 2026-07-07T07:16:13Z | |
| dc.description | We study a model of hard-core bosons with short-range repulsive interactions at half-filling on the kagome lattice. Using quantum Monte Carlo (QMC) numerics, we find that this model shows a continuous superfluid to insulator quantum phase transition, with exponents $z=1$ and $ν\approx 0.67(5)$. The insulator, $\cI^*$, exhibits short-ranged density and bond correlations, topological order and exponentially decaying spatial vison correlations, all of which point to a $Z_2$ fractionalized phase. We estimate the vison gap in $\cI^*$ from the temperature dependence of the energy. Our results, together with the equivalence between hard-core bosons and $S=1/2$ spins, provide compelling evidence for a spin-liquid phase in an easy-axis spin-1/2 model with no special conservation laws. | |
| dc.description | 4 pages, 6 figures, published version | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0607778 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0607778 | |
| dc.identifier | Phys. Rev. Lett. 97, 207204 (2006) | |
| dc.identifier | doi:10.1103/PhysRevLett.97.207204 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/113510 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Mesoscale and Nanoscale Physics | |
| dc.title | Spin liquid phase in a $S=1/2$ quantum magnet on the kagome lattice | |
| dc.type | text |