Commensurate-Incommensurate Transition and Melting in Two-Dimension

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概要

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• The phase diagram for the two-dimensional sine-Gordon system with incommensurability is investigated using a self-consistent variational approach. At T=0 the system undergoes a well-known continuous transition between commensurate (C) and incommensurate (IC) solid phases. At low temperatures 0<T<T_R/2 the C-solid phase is separated from the IC-solid phase by a first-order transition line, and at high temperatures T_R/2≤T<T_R the C-solid phase is separated by a liquid phase by a first-order transition line. T_R is the roughening or melting temperature for the system without incommensurability, and this melting transition at T_R is continuous. The liquid and the IC-solid phase are separated by a continuous transition line at T=T_R/2, where the free energy has an essential singularity.

• 理論物理学刊行会の論文
• 1980-03-25

著者

• Saito Yukio

  Institut Fur Festkorperforschung Der Kernforschungsanlage Julich

関連論文

• Commensurate-Incommensurate Transition and Melting in Two-Dimension
• Magnetic Correlation Function of the Two-Dimensional Planar Spin Model : Self-Consistent Calculation

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