Spin-Phonon Chains with Bond Coupling
| dc.creator | Raas, Carsten | |
| dc.creator | Löw, Ute | |
| dc.creator | Uhrig, Götz S. | |
| dc.creator | Kühne, Rainer W. | |
| dc.date | 2001-10-15 | |
| dc.date | 2002-01-29 | |
| dc.date.accessioned | 2026-07-07T02:43:09Z | |
| dc.date.available | 2026-07-07T02:43:09Z | |
| dc.description | We investigate the antiadiabatic limit of an antiferromagnetic S=1/2 Heisenberg chain coupled to Einstein phonons via a bond coupling. The flow equation method is used to decouple the spin and the phonon part of the Hamiltonian. In the effective spin model longer range spin-spin interactions are generated. The effective spin chain is frustrated. The resulting temperature dependent couplings are used to determine the magnetic susceptibility and to determine the phase transition from a gapless state to a dimerized gapped phase. The susceptibilities and the phase diagram obtained via the effective couplings are compared with independently calculated quantum Monte Carlo results. | |
| dc.description | RevTeX 4, 8 pages, 8 eps figures; final version containing some minor changes and an additional figure | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0110298 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0110298 | |
| dc.identifier | Physical Review B 65, 144438 (2002) | |
| dc.identifier | doi:10.1103/PhysRevB.65.144438 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/18384 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Spin-Phonon Chains with Bond Coupling | |
| dc.type | text |