Realization of a Strained Atomic Wire Superlattice.
ACS Nano
; 9(11): 10621-7, 2015 Nov 24.
Article
em En
| MEDLINE
| ID: mdl-26446292
ABSTRACT
A superlattice of strained Au-Si atomic wires is successfully fabricated on a Si surface. Au atoms are known to incorporate into the stepped Si(111) surface to form a Au-Si atomic wire array with both one-dimensional (1D) metallic and antiferromagnetic atomic chains. At a reduced density of Au, we find a regular array of Au-Si wires in alternation with pristine Si nanoterraces. Pristine Si nanoterraces impose a strain on the neighboring Au-Si wires, which modifies both the band structure of metallic chains and the magnetic property of spin chains. This is an ultimate 1D version of a strained-layer superlattice of semiconductors, defining a direction toward the fine engineering of self-assembled atomic-scale wires.
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MEDLINE
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En
Ano de publicação:
2015
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Article