Step Zipping on the Vicinal Surface Near Equilibrium : Role of the Singularity in the Anisotropic Surface Free Energy(<Special Topic>How Do We Model Crystal Growth Phenomena?)

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  • Akutsu Noriko
    Faculty of Engineering, Osaka Electro-Communication University

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  • 平衡状態に近い微斜面におけるステップ・ジッピング現象 : 異方的結晶表面張力の特異性が果たす役割(<特集>どのように結晶成長現象をモデル化するか?)
  • 平衡状態に近い微斜面におけるステップ・ジッピング現象--異方的結晶表面張力の特異性が果たす役割
  • ヘイコウ ジョウタイ ニ チカイ ビシャメン ニ オケル ステップ ジッピング ゲンショウ イホウテキ ケッショウ ヒョウメン チョウリョク ノ トクイセイ ガ ハタス ヤクワリ

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Abstract

The anisotropic surface free energy on the vicinal surface of the restricted solid-on-solid model with inter-step attractions of the point contact type (p-RSOS model) is calculated statistical mechanically. The step-zipping process near equilibrium at low temperature is demonstrated by use of Monte Carlo simulations with Metropolis algorithm. We show that the zipping process is caused by the singular property of the surface free energy, though the model contains no long range interaction such as elastic inter-actions among steps.

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