Spin melting and refreezing driven by uniaxial compression on a dipolar hexagonal plate
Abstract
We investigate freezing characteristics of a finite dipolar hexagonal plate by the 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 the 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 peculiar anisotropic nature of the dipole-dipole interaction.
Cite
@article{arxiv.cond-mat/0609679,
title = {Spin melting and refreezing driven by uniaxial compression on a dipolar hexagonal plate},
author = {Katsuyoshi Matsushita and Ryoko Sugano and Akiyoshi Kuroda and Yusuke Tomita and Hajime Takayama},
journal= {arXiv preprint arXiv:cond-mat/0609679},
year = {2007}
}
Comments
Proceedings of the Highly Frustrated Magnetism (HFM2006) conference. To appear in a special issue of J. Phys. Condens. Matter