Exact ground state and kink-like excitations of a two-dimensional Heisenberg antiferromagnet
Data(s) |
01/10/1999
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Resumo |
A rare example of a two-dimensional Heisenberg model with an exact dimerized ground state is presented. This model, which can be regarded as a variation on the kagome' lattice, has several features of interest: it has a highly (but not macroscopically) degenerate ground state; it is closely related to spin chains studied by earlier authors; in particular, it exhibits domain-wall-like "kink" excitations normally associated only with one-dimensional systems. In some limits it decouples into noninteracting chains; unusually, this happens in the limit of strong, rather than weak, interchain coupling. [S0163-1829(99)50338-X]. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/19325/1/pR9904_1.pdf Siddharthan, Rahul (1999) Exact ground state and kink-like excitations of a two-dimensional Heisenberg antiferromagnet. In: Physical Review B, 60 (14). R9904-R9907. |
Publicador |
The American Physical Society |
Relação |
http://prola.aps.org/pdf/PRB/v60/i14/pR9904_1 http://eprints.iisc.ernet.in/19325/ |
Palavras-Chave | #Physics |
Tipo |
Journal Article PeerReviewed |