Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum Antiferromagnet
| dc.creator | Laeuchli, Andreas | |
| dc.creator | Lhuillier, Claire | |
| dc.date | 2009-01-08 | |
| dc.date.accessioned | 2026-07-07T12:27:38Z | |
| dc.date.available | 2026-07-07T12:27:38Z | |
| dc.description | We determine dynamical response functions of the S=1/2 Heisenberg quantum antiferromagnet on the kagome lattice based on large-scale exact diagonalizations combined with a continued fraction technique. The dynamical spin structure factor has important spectral weight predominantly along the boundary of the extended Brillouin zone and energy scans reveal broad response extending over a range of 2 \sim 3J concomitant with pronounced intensity at lowest available energies. Dispersive features are largely absent. Dynamical singlet correlations -- which are relevant for inelastic light probes -- reveal a similar broad response, with a high intensity at low frequencies omega/J \lesssim 0.2J. These low energy singlet excitations do however not seem to favor a specific valence bond crystal, but instead spread over many symmetry allowed eigenstates. | |
| dc.description | 4 pages, 3 figures | |
| dc.identifier | https://arxiv.org/abs/0901.1065 | |
| dc.identifier | http://arxiv.org/abs/0901.1065 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/215273 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.subject | Statistical Mechanics | |
| dc.title | Dynamical Correlations of the Kagome S=1/2 Heisenberg Quantum Antiferromagnet | |
| dc.type | text |