Spin-lattice model of magnetoelectric transitions in RbCoBr3

Tota Nakamura, Yoichi Nishiwaki

研究成果: Article査読

6 被引用数 (Scopus)

抄録

Extensive Monte-Carlo simulations are performed to analyze a recent neutron-diffraction experiment on a distorted triangular lattice compound RbCoBr3. We consider a spin-lattice model where both spin and lattice are Ising variables. This model explains well successive magnetic and dielectric transitions observed in the experiment. The exchange interaction parameters and the spin-lattice coupling are estimated. It is found that the spin-lattice coupling is important to explain the slow growth of a ferrimagnetic order. The present simulations were made possible by developing a modified Monte-Carlo algorithm, which accelerates slow Monte-Carlo dynamics of quasi-one-dimensional frustrated systems.

本文言語English
論文番号104422
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
78
10
DOI
出版ステータスPublished - 2008 9月 26

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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