Phase Transitions of Frustrated XY spins in Two Dimensions

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The row model is used to study the commensurate-incommensurate (C-IC) an isotropic (FFTXY) transitions of the frustrated 2D XY model on the triangular lattice. New relevant variables clarify the physics of these transitions: phase and chiral variables are coupled so that spin waves generate long range polar interactions. The resulting dielectric constan diverges at the transition. A single transition occurs for the FFTXY model; in the C-IC regime the Lifshitz point is at T=0 and the C phase i a Smectic-A like phase which disorders via a 2D nematic-smectic-A transition.
11 pages, Plain TeX, LA2-UPS-94/2921

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Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/27183

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/9410016
 http://arxiv.org/abs/cond-mat/9410016

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arXiv