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

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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Article number145206
JournalJournal of Physics Condensed Matter
Volume19
Issue number14
DOIs
Publication statusPublished - 2007 Apr 11
Externally publishedYes

Fingerprint

Melting
melting
Freezing
Ground state
freezing
dipoles
ground state
Piles
simulation
Annealing
annealing
interactions
Temperature
temperature
Direction compound
Monte Carlo simulation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Spin melting and refreezing driven by uniaxial compression on a dipolar hexagonal plate. / Matsushita, K.; Sugano, R.; Kuroda, A.; Tomita, Yusuke; Takayama, H.

In: Journal of Physics Condensed Matter, Vol. 19, No. 14, 145206, 11.04.2007.

Research output: Contribution to journalArticle

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