Structural instability of two- and three-dimensional pyrochlore spin lattices in high magnetic fields
| dc.creator | Derzhko, Oleg | |
| dc.creator | Richter, Johannes | |
| dc.date | 2005-07-22 | |
| dc.date.accessioned | 2026-07-07T06:24:46Z | |
| dc.date.available | 2026-07-07T06:24:46Z | |
| dc.description | We consider the quantum spin-$s$ $XXZ$ Heisenberg antiferromagnet on the two- and three-dimensional pyrochlore lattices and examine a spin-Peierls mechanism of lowering the total energy by a lattice distortion in a high magnetic field. For the exact eigenstates consisting of several independent localized magnons in a ferromagnetic environment we show the existence of a spin-Peierls instability by rigorous analytical calculations. In addition we report on exact diagonalization data for finite two-dimensional pyrochlore lattices up to N=64 sites. We discuss a scenario of the field-tuned changes in the ground-state properties of the frustrated spin lattices due to the coupling between spin and lattice degrees of freedom. | |
| dc.description | 10 pages (4 figures included) | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0507538 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0507538 | |
| dc.identifier | Physical Review B, 2005, Volume 72, Number 9, Article 094437 (6 pages) | |
| dc.identifier | doi:10.1103/PhysRevB.72.094437 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/96661 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Structural instability of two- and three-dimensional pyrochlore spin lattices in high magnetic fields | |
| dc.type | text |