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dc.date.accessioned | 2021-08-24T16:57:46Z | |
dc.date.available | 2021-08-24T16:57:46Z | |
dc.date.issued | 1998-09-01 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/123292 | |
dc.description.abstract | In this paper we continue and extend a systematic study of plateaux in magnetization curves of antiferromagnetic Heisenberg spin-1/2 ladders. We first review a bosonic field-theoretical formulation of a single XXZ-chain in the presence of a magnetic field, which is then used for an Abelian bosonization analysis of N weakly coupled chains. Predictions for the universality classes of the phase transitions at the plateaux boundaries are obtained in addition to a quantization condition for the value of the magnetization on a plateau. These results are complemented by and checked against strong-coupling expansions. Finally, we analyze the strong-coupling effective Hamiltonian for an odd number $N$ of cylindrically coupled chains numerically. For N we explicitly observe a spin gap with a massive spinon-type fundamental excitation and obtain indications that this gap probably survives the limit N → ∞. | en |
dc.format.extent | 6241-6257 | es |
dc.language | en | es |
dc.subject | Magnetic field | es |
dc.subject | Physics | es |
dc.subject | Abelian group | es |
dc.subject | Phase transition | es |
dc.subject | Antiferromagnetism | es |
dc.subject | Hamiltonian (quantum mechanics) | es |
dc.subject | Condensed matter physics | es |
dc.subject | Bosonization | es |
dc.subject | Magnetization | es |
dc.subject | Excitation | es |
dc.title | Magnetization plateaux in N-leg spin ladders | en |
dc.type | Articulo | es |
sedici.identifier.other | arXiv:cond-mat/9802035 | es |
sedici.identifier.other | doi:10.1103/physrevb.58.6241 | es |
sedici.identifier.issn | 0163-1829 | es |
sedici.identifier.issn | 1095-3795 | es |
sedici.creator.person | Cabra, Daniel Carlos | es |
sedici.creator.person | Honecker, Andreas | es |
sedici.creator.person | Pujol, Pierre | es |
sedici.subject.materias | Física | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Exactas | es |
sedici.subtype | Preprint | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Physical Review B | es |
sedici.relation.journalVolumeAndIssue | vol. 58, no. 10 | es |