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나노 구조 물리 연구단
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Spontaneous assembly of ordered atomic wires with a long interwire distance on a stepped atomic template

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Title
Spontaneous assembly of ordered atomic wires with a long interwire distance on a stepped atomic template
Author(s)
Shin, B. G.; Kim, M. K.; Oh, D. -H.; Song, I.; Lee, J. H.; Woo, S. H.; Park, C. -Y.; Joung Real Ahn
Publication Date
2013-05
Journal
APPLIED PHYSICS LETTERS, v.102, no.20, pp.201611 -
Publisher
AMER INST PHYSICS
Abstract
Indium atomic wires with a long interwire distance of 5.73 nm were ordered spontaneously at room temperature on a stepped atomic template using a Si(557) surface. The long interwire distance is very interesting because, in general, interwire interactions are needed to order atomic wires in such a way that ordered atomic wires have a short interwire distance of just a few Å. The Si(557) surface is composed of four steps, i.e., one (111) step and three (112) steps, with a very similar local structure to each other. However, mobile indium atoms at room temperature were adsorbed specifically onto the second Si(112) step while maintaining the overall structure of the stepped atomic template, as observed by scanning tunneling microscopy, which results in the ordered atomic wires with the long interwire distance. This was supported by first-principles calculations. © 2013 AIP Publishing LLC.
URI
http://pr.ibs.re.kr/handle/8788114/1334
DOI
10.1063/1.4807623
ISSN
0003-6951
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
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