Phase diagram of low-dimensional antiferromagnets with competing order parameters: A Ginzburg-Landau-theory approach

Autor:	Glazkov, V. N., Casola, F., Ott, H. -R., Shiroka, T.
Rok vydání:	2012
Předmět:	Condensed Matter - Strongly Correlated Electrons
Zdroj:	Phys. Rev. B 87, 054427 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.87.054427
Popis:	We present a detailed analysis of the phase diagram of antiferromagnets with competing exchange-driven and field-induced order parameters. By using the quasi-1D antiferromagnet BaCu_2Si_2O_7 as a test case, we demonstrate that a model based on a Ginzburg-Landau type of approach provides an adequate description of both the magnetization process and of the phase diagram. The developed model not only accounts correctly for the observed spin-reorientation transitions, but it predicts also their unusual angular dependence. Comment: 7 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1209.4216 Zobrazit plný text záznamu View this record from Arxiv