Massive and Massless Behavior in Dimerized Spin Ladders
| dc.creator | Cabra, D. C. | |
| dc.creator | Grynberg, M. D. | |
| dc.date | 1998-10-20 | |
| dc.date | 1999-02-12 | |
| dc.date.accessioned | 2026-07-07T03:11:47Z | |
| dc.date.available | 2026-07-07T03:11:47Z | |
| dc.description | We investigate the conditions under which a gap vanishes in the spectrum of dimerized coupled spin-1/2 chains by means of Abelian bosonization and Lanczos diagonalization techniques. Although both interchain ($J'$) and dimerization ($δ$) couplings favor a gapful phase, it is shown that a suitable choice of these interactions yields massless spin excitations. We also discuss the influence of different arrays of relative dimerization on the appearance of non-trivial magnetization plateaus. | |
| dc.description | 5 pages, RevTex, 5 Postscript figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/9810263 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/9810263 | |
| dc.identifier | Phys. Rev. Lett. 82, 1768 (1999) | |
| dc.identifier | doi:10.1103/PhysRevLett.82.1768 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/28705 | |
| dc.subject | Strongly Correlated Electrons | |
| dc.title | Massive and Massless Behavior in Dimerized Spin Ladders | |
| dc.type | text |