Realization of a Strained Atomic Wire Superlattice

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• 作者：Inkyung Song ; Jung Suk Goh ; Sung-Hoon Lee ; Sung Won Jung ; Jin Sung Shin ; Hiroyuki Yamane ; Nobuhiro Kosugi ; Han Woong Yeom
• 刊名：ACS Nano
• 出版年：2015
• 出版时间：November 24, 2015
• 年：2015
• 卷：9
• 期：11
• 页码：10621-10627
• 全文大小：521K
• ISSN：1936-086X

文摘

A superlattice of strained Au鈥揝i 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鈥揝i 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鈥揝i wires in alternation with pristine Si nanoterraces. Pristine Si nanoterraces impose a strain on the neighboring Au鈥揝i 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.