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Issue 24, 2016
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Attractive interaction between Mn atoms on the GaAs(110) surface observed by scanning tunneling microscopy

Atsushi Taninaka,a   Shoji Yoshida,a   Ken Kanazawa,a   Eiko Hayaki,a   Osamu Takeuchia  and  Hidemi Shigekawa*a  
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* Corresponding authors

a Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
E-mail: hidemi@ims.tsukuba.ac.jp
Web: http://dora.bk.tsukuba.ac.jp
Tel: +81-29-853-5276

Abstract

Scanning tunneling microscopy/spectroscopy (STM/STS) was carried out to investigate the structures of Mn atoms deposited on a GaAs(110) surface at room temperature to directly observe the characteristics of interactions between Mn atoms in GaAs. Mn atoms were paired with a probability higher than the random distribution, indicating an attractive interaction between them. In fact, re-pairing of unpaired Mn atoms was observed during STS measurement. The pair initially had a new structure, which was transformed during STS measurement into one of those formed by atom manipulation at 4 K. Mn atoms in pairs and trimers were aligned in the <110> direction, which is theoretically predicted to produce a high Curie temperature.

Graphical abstract: Attractive interaction between Mn atoms on the GaAs(110) surface observed by scanning tunneling microscopy

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Article information

https://doi.org/10.1039/C6NR02190E
Submitted
16 Mar 2016
Accepted
23 May 2016
First published
24 May 2016
Nanoscale, 2016,8, 12118-12122
Article type
Communication
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Attractive interaction between Mn atoms on the GaAs(110) surface observed by scanning tunneling microscopy

A. Taninaka, S. Yoshida, K. Kanazawa, E. Hayaki, O. Takeuchi and H. Shigekawa, Nanoscale, 2016, 8, 12118
DOI: 10.1039/C6NR02190E

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