A mean-field approach to a discrete dipolar spin model with uniaxial magnetic anisotropy

Yusuke Tomita; Shunsuke Yanai; Hajime Takayama

doi:10.1142/S0129183109014400

A mean-field approach to a discrete dipolar spin model with uniaxial magnetic anisotropy

Yusuke Tomita, Shunsuke Yanai, Hajime Takayama

Research output: Contribution to journal › Article › peer-review

Abstract

Using the mean-field approximation, we study the reorientation transition in a discrete dipolar spin model. We array the d-dimensional spins in the d-1-dimensional hypercubic lattice points, and apply the magnetic anisotropy in the dth direction. Even though the long-range dipolar interaction is truncated to the nearest-neighbor interaction, the model exhibits the reorientation transition. The effects of the exchange interaction on the dipolar system are also studied.

Original language	English
Pages (from-to)	1335-1343
Number of pages	9
Journal	International Journal of Modern Physics C
Volume	20
Issue number	9
DOIs	https://doi.org/10.1142/S0129183109014400
Publication status	Published - 2009 Sept
Externally published	Yes

Keywords

Critical phenom-ena
Dipolar lattice
Mean-field theory
Reorientation transition

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Mathematical Physics
Physics and Astronomy(all)
Computer Science Applications
Computational Theory and Mathematics

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10.1142/S0129183109014400

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title = "A mean-field approach to a discrete dipolar spin model with uniaxial magnetic anisotropy",

abstract = "Using the mean-field approximation, we study the reorientation transition in a discrete dipolar spin model. We array the d-dimensional spins in the d-1-dimensional hypercubic lattice points, and apply the magnetic anisotropy in the dth direction. Even though the long-range dipolar interaction is truncated to the nearest-neighbor interaction, the model exhibits the reorientation transition. The effects of the exchange interaction on the dipolar system are also studied.",

keywords = "Critical phenom-ena, Dipolar lattice, Mean-field theory, Reorientation transition",

author = "Yusuke Tomita and Shunsuke Yanai and Hajime Takayama",

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AU - Tomita, Yusuke

AU - Yanai, Shunsuke

AU - Takayama, Hajime

N1 - Funding Information: Yusuke Tomita would like to thank Professor K. Hukushima for bringing our attention to the mean-field calculation. This work was supported by the Next Generation Super Computing Project, Nanoscience Program, MEXT, Japan.

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Y1 - 2009/9

N2 - Using the mean-field approximation, we study the reorientation transition in a discrete dipolar spin model. We array the d-dimensional spins in the d-1-dimensional hypercubic lattice points, and apply the magnetic anisotropy in the dth direction. Even though the long-range dipolar interaction is truncated to the nearest-neighbor interaction, the model exhibits the reorientation transition. The effects of the exchange interaction on the dipolar system are also studied.

AB - Using the mean-field approximation, we study the reorientation transition in a discrete dipolar spin model. We array the d-dimensional spins in the d-1-dimensional hypercubic lattice points, and apply the magnetic anisotropy in the dth direction. Even though the long-range dipolar interaction is truncated to the nearest-neighbor interaction, the model exhibits the reorientation transition. The effects of the exchange interaction on the dipolar system are also studied.

KW - Critical phenom-ena

KW - Dipolar lattice

KW - Mean-field theory

KW - Reorientation transition

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A mean-field approach to a discrete dipolar spin model with uniaxial magnetic anisotropy

Abstract

Keywords

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