Frustrated Ising Model on the Garnet Lattice(Condensed Matter : Structure, Mechanical and Thermal Properties)

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概要

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• We investigate a frustrated Ising spin system on the garnet lattice composed of a specific network of corner-sharing triangles. By means of Monte Carlo simulations with the heat bath algorithm, we discuss the magnetic properties at finite temperatures. It is shown that the garnet spin system with the nearest-neighbor couplings does not exhibit any magnetic transitions, yielding the large residual entropy at zero temperature. We also investigate the effect of the long-range dipolar interaction systematically to determine the phase diagram of the Ising model on the garnet lattice. We find that there appear a variety of distinct phases depending on the cutoff length of the long-range interaction, in contrast to the pyrochlore spin-ice systems.

• 社団法人日本物理学会の論文
• 2004-07-15

著者

• KOGA Akihisa

  Department of Applied Physics, Osaka University

• Koga Akihisa

  Department Of Applied Physics Osaka University

• KAWAKAMI Norio

  Department of Applied Physics, Osaka University

• Kawakami Norio

  Department Of Applied Physics Osaka University

• Yoshioka Tomoaki

  Institute For Solid State Physics University Of Tokyo

• Koga A

  Department Of Physics Kyoto University

• YOSHIOKA Takuya

  Department of Applied Physics, Osaka University

• Yoshioka Takuya

  Department Of Applied Chemistry Graduate School Of Engineering Tohoku University

• Koga Akihisa

  Department of Physics, Kyoto University

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