Phase Transitions in Bilayer Heisenberg Model with General Couplings

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概要

• 論文の詳細を見る

• The ground state properties and phase diagr;rum of bilayer Heisenberg rnodel on the squarelattice are sttudied in a xvide range of pararneter space of intralayer exchange cotrplings, assut-n-ing an antif'erronaagnetic coupling between constittrent layers. In the classical limit, the modelexhibits three phases: two of these are ordered phases specified by the ordering wave vectors(m, m; rr) and (O, O; rc), where the third cornponent of each indecates the antil'errornagnetic orien-tation between layers, and another one is "canted" phase, stal.cilized by cornpeting interactions.The effects of qtrantuna fltrcttrations in the model xvith S :: 172 have been explored in ternasof dimer rnean-field theory, exact diagonaJization of 2'v/i x 2'l x 2 clusters, and higher-orderperturbation expansions abovrt the interlayer dimer lirnit.

• 社団法人日本物理学会の論文
• 1997-11-15

著者

• Chikara Ishii

  Department Of Physics Faculty Of Science Science University Of Tokyo

• Matsushita Yasuhiro

  Department Of Neurological Surgery Aichi Medical University

• Matsushita Yasuhiro

  Department Of Physics Faculty Of Science Science University Of Tokyo

• P. Gelfand

  Department Of Physics Colorado State University

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• Phase Transitions in Bilayer Heisenberg Model with General Couplings

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