Nearly critical ground state of LaCuO2.5
| dc.creator | Troyer, Matthias | |
| dc.creator | Zhitomirsky, M. E. | |
| dc.creator | Ueda, Kazuo | |
| dc.date | 1996-06-13 | |
| dc.date | 1996-09-13 | |
| dc.date.accessioned | 2026-07-07T09:02:28Z | |
| dc.date.available | 2026-07-07T09:02:28Z | |
| dc.description | Using a combination of analytical techniques and Quantum Monte Carlo simulations we investigate the coupled spin ladder system LaCuO2.5. At a critical ratio of the interladder to intraladder coupling (J'/J)_c \approx 0.11 we find a quantum phase transition between a Neel ordered and a disordered state. At criticality the uniform susceptibility behaves as χ(T)=aT^2 with a universal prefactor. At intermediate temperatures the system crosses over to a ``decoupled ladders regime'' with pseudo-gap type behavior, similar to uncoupled ladders. This can explain the gap-like experimental data for the magnetic susceptibility of LaCuO2.5 despite the presence of the long range Neel order. | |
| dc.description | 4 pages, RevTex, 2 figures. Revised version contains QMC data for larger lattices and a fit to experimental data | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9606089 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9606089 | |
| dc.identifier | Phys. Rev. B 55, R6117 (1997) | |
| dc.identifier | doi:10.1103/PhysRevB.55.R6117 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/148643 | |
| dc.subject | Condensed Matter | |
| dc.title | Nearly critical ground state of LaCuO2.5 | |
| dc.type | text |