Peculiar 'from-edge-to-interior' spin freezing in a magnetic dipolar cube

Katsuyoshi Matsushita, Ryoko Sugano, Akiyoshi Kuroda, Yusuke Tomita, Hajime Takayama

研究成果: Article査読

5 被引用数 (Scopus)

抄録

By molecular dynamics simulation, we have investigated classical Heisenberg spins, which are arrayed on a finite simple cubic lattice and interact with each other only by the dipole-dipole interaction, and have found its peculiar from-edge-to-interior freezing process. As the temperature is decreased, spins on each edge predominantly start to freeze in a ferromagnetic alignment parallel to the edge around the corresponding bulk transition temperature, then from each edge grow domains with short-ranged orders similar to the corresponding bulk orders, and finally the system is expected to end up with a unique multidomain ground state at the lowest temperature. We infer that these freezing characteristics are attributed to the anisotropic and long-range nature of the dipole-dipole interaction combined with a finite-size effect.

本文言語English
ページ(範囲)2651-2654
ページ数4
ジャーナルjournal of the physical society of japan
74
10
DOI
出版ステータスPublished - 2005 10
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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