Artificially ordered Bi/Sb superlattice alloys: Fabrication and transport properties

被引:13
作者
Cho, SL [1 ]
Kim, Y
Youn, SJ
DiVenere, A
Wong, GKL
Freeman, AJ
Ketterson, JB
Olafsen, LJ
Vurgaftman, I
Meyer, JR
Hoffman, CA
机构
[1] Univ Ulsan, Dept Phys, Ulsan 680749, South Korea
[2] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA
[3] USN, Res Lab, Washington, DC 20375 USA
[4] HKUST, Dept Phys, Hong Kong, Hong Kong, Peoples R China
[5] Northwestern Univ, Dept Elect & Comp Engn, Evanston, IL 60208 USA
关键词
D O I
10.1103/PhysRevB.64.235330
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We hake fabricated Bi/Sb superlattice alloys that are artificially ordered on the atomic scale using molecular-beam epitaxy. We observe that by changing the superlattice period thickness. the electronic structure can be "tuned" from a semimetal, through zero gap, to a narrow-gap semiconductor, These unique properties, which are distinct from those in random alloys. are believed to be a consequence of ordered atomic configurations.
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页数:4
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