期刊論文

學年 91
學期 1
出版(發表)日期 2002-11-01
作品名稱 Exactly solved Frenkel-Kontorova model with multiple subwells
作品名稱(其他語言)
著者 Lee, Shih-Chang ; Tzeng, Wen-Jer
單位 淡江大學物理學系
出版者 College Park: American Physical Society
著錄名稱、卷期、頁數 Physical Review B (Condensed Matter and Materials Physics) 66(18), 184108(22pages)
摘要 We exactly solve a class of Frenkel-Kontorova models with a periodic potential composed of piecewise convex parabolas having the same curvature. All rotationally ordered stable configurations can be depicted with appropriate phase parameters. The elements of a phase parameter are grouped into subcommensurate clusters. Phase transitions, manifested in the gap structure changes previously seen in numerical simulations, correspond to the splitting and merging of subcommensurate clusters with the appearance of incommensurate nonrecurrent rotationally ordered stable configurations. Through the notion of elementary phase shifts, all the possibilities for the existence of configurations degenerate with the ground state are scrutinized and the domains of stability in the phase diagram are characterized. At the boundaries of a domain of stability, nonrecurrent minimum energy configurations are degenerate with the ground state configurations and phase transitions occur.
關鍵字 analytic method;cluster analysis;model;phase transition;simulation;solvation;structure analysis
語言 en
ISSN 1098-0121
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Tzeng, Wen-Jer
審稿制度
國別 USA
公開徵稿
出版型式 紙本
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