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.
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20 May 2013
Research Article|
May 24 2013
Spontaneous assembly of ordered atomic wires with a long interwire distance on a stepped atomic template
B. G. Shin;
B. G. Shin
1Department of Physics,
Sungkyunkwan University
, Suwon 440-746, South Korea
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M. K. Kim;
M. K. Kim
1Department of Physics,
Sungkyunkwan University
, Suwon 440-746, South Korea
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D.-H. Oh;
D.-H. Oh
1Department of Physics,
Sungkyunkwan University
, Suwon 440-746, South Korea
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I. Song;
I. Song
1Department of Physics,
Sungkyunkwan University
, Suwon 440-746, South Korea
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J. H. Lee;
J. H. Lee
1Department of Physics,
Sungkyunkwan University
, Suwon 440-746, South Korea
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S. H. Woo;
S. H. Woo
2College of Pharmacy,
Chungnam National University
, Daejeon 305-764, South Korea
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C.-Y. Park;
C.-Y. Park
1Department of Physics,
Sungkyunkwan University
, Suwon 440-746, South Korea
3Department of Energy Science,
Sungkyunkwan University
, Suwon 440-746, South Korea
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a)
Electronic mail: [email protected]
Appl. Phys. Lett. 102, 201611 (2013)
Article history
Received:
February 20 2013
Accepted:
May 08 2013
Citation
B. G. Shin, M. K. Kim, D.-H. Oh, I. Song, J. H. Lee, S. H. Woo, C.-Y. Park, J. R. Ahn; Spontaneous assembly of ordered atomic wires with a long interwire distance on a stepped atomic template. Appl. Phys. Lett. 20 May 2013; 102 (20): 201611. https://doi.org/10.1063/1.4807623
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