Commensurate-Incommensurate Phase Transition in Double Sine-Gordon System

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概要

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• The commensurate-incommensurate phase transition in the classical one dimensional double sine-Gordon (Ds-G) system is studied analitically. The energy density of kink lattice and the ratio of the mean misfit parameter (q) to the original one (q_0) are calculated in order to discuss the phase transition. It is shown that the phase transition occurs in qualitatively the same manner as sine-Gordon (s-G) system with the change of two competing interactions. q/q_0 shows, on the whole, crossover behavior from one s-G behavior to another s-G one as the relative magnitude of two commensurability potentials is changed. Comparison between q/q_0's in s-G and Ds-G cases indicates that the presence of the extra commensurability potential makes the system more incommensurate.

• 理論物理学刊行会の論文
• 1983-10-25

著者

• Iwabuchi Shuichi

  Institut Fur Theoretische Physik Freie Universitat Berlin

• IWABUCHI Shuichi

  Institut fur Theoretische Physik, Freie Universitat Berlin

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