STM observation of the Si(111)-c(12×2)-Ag surface

Nobuhiro Miyata; Iwao Matsuda; Marie D'angelo; Harumo Morikawa; Toru Hirahara; Shuji Hasegawa

doi:10.1380/ejssnt.2005.151

Regular Papers

STM observation of the Si(111)-c(12×2)-Ag surface

Nobuhiro Miyata, Iwao Matsuda, Marie D'angelo, Harumo Morikawa, Toru Hirahara, Shuji Hasegawa

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Keywords: Phase transition, Order-disorder phase transition, Scanning tunneling microscopy, Silver, Silicon

JOURNAL FREE ACCESS

2005 Volume 3 Pages 151-155

DOI https://doi.org/10.1380/ejssnt.2005.151

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Abstract

The Si(111)-c(12×2)-Ag surface phase was observed by scanning tunneling microscopy (STM) at 65 K and its atomic structure was analyzed in detail. The phase is the ground-state structure within the framework of 'Honeycomb-Chain Channel' reconstruction, attained through successive phase transitions by cooling from 3×1 (> ca. 500 K) and 6×1 phases (> ca. 100 K). The transitions are likely order-disorder types with two-step freezing of fluctuation of the Ag atom positions. [DOI: 10.1380/ejssnt.2005.151]

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