Spin melting and refreezing driven by uniaxial compression on a dipolar hexagonal plate

K. Matsushita, R. Sugano, A. Kuroda, Y. Tomita, H. Takayama

研究成果: Article査読

抄録

We investigate the freezing characteristics of a finite dipolar hexagonal plate by Monte Carlo simulation. The hexagonal plate is cut out from a piled triangular lattice of three layers with FCC-like (ABCABC) stacking structure. In the present study an annealing simulation is performed for a dipolar plate uniaxially compressed in the direction of layer-piling. We find spin melting and refreezing driven by the uniaxial compression. Each of the melting and refreezing corresponds one-to-one with a change of the ground states induced by compression. The freezing temperatures of the ground-state orders differ significantly from each other, which gives rise to the spin melting and refreezing of the present interest. We argue that these phenomena are originated by a finite size effect combined with a peculiar anisotropic nature of the dipole-dipole interaction.

本文言語English
論文番号145206
ジャーナルJournal of Physics Condensed Matter
19
14
DOI
出版ステータスPublished - 2007 4 11
外部発表はい

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学

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