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http://hdl.handle.net/1843/54908| Type: | Artigo de Periódico |
| Title: | J 1 x - j 1 y - j 2 square-lattice anisotropic Heisenberg model |
| Authors: | Antônio Sérgio Teixeira Pires |
| Abstract: | The spin one Heisenberg model with an easy-plane single-ion anisotropy and spatially anisotropic nearest-neighbor coupling, frustrated by a next-nearest neighbor interaction, is studied at zero temperature using a SU(3) Schwinger boson formalism (sometimes also referred to as flavor wave theory) in a mean field approximation. The local constraint is enforced by introducing a Lagrange multiplier. The enlarged Hilbert space of S = 1 spins lead to a nematic phase that is ubiquitous to S = 1 spins with single ion anisotropy. The phase diagram shows two magnetically ordered phase, separated by a quantum paramagnetic (nematic) phase. |
| Subject: | Antiferromagnetismo Transições de fases Modelo de Heisenberg |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1016/j.jmmm.2017.03.072 |
| URI: | http://hdl.handle.net/1843/54908 |
| Issue Date: | 2017 |
| metadata.dc.url.externa: | https://www.sciencedirect.com/science/article/pii/S0304885316328086 |
| metadata.dc.relation.ispartof: | Journal of Magnetism and Magnetic Materials |
| Appears in Collections: | Artigo de Periódico |
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