Time-Fluctuation of the Dimer Structure on a Ge(001) Surface Studied by a Monte Carlo Simulation and a First-Principles Calculation

Hiroshi Kawai, Yoshihide Yoshimoto, Hiromitsu Shima, Yoshimichi Nakamura, Masaru Tsukada

研究成果: ジャーナルへの寄稿学術誌査読

19 被引用数 (Scopus)

抄録

The time-resolving dynamical Monte Carlo simulations (TDMCS) on Ge(001) surface at 200 K for the orientational arrangement at finite temperature are performed. The model potential for the continuous values of the tilting angles are obtained. The coefficients in the model potential are obtained from results of the first-principles calculations. The transition rates of the dimer flip-flop motion for TDMCS are obtained from the model potential. The images of time-resolving constant-height current mode STM (TCHC STM) calculated from TDMCS results at 200 K exhibit the glimmering near kinks at step edge. The attempt frequency of the transition rates is confirmed as 3.0 THz from the frequecy of the single event of the dimer flip-flop for the period of 56 μs. The calculated results of TDMCS reproduce well results of the experimental TCHC STM.

本文言語英語
ページ(範囲)2192-2199
ページ数8
ジャーナルJournal of the Physical Society of Japan
71
9
DOI
出版ステータス出版済み - 9月 1 2002

!!!All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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