title: Evolution of morphology and microstructure of GaAs/GaSb nanowire heterostructures.
abstract: In this paper, we successfully grow GaAs/GaSb core-shell heterostructure nanowires (NWs) by molecular beam epitaxy (MBE). The as-grown GaSb shell layer forms a wurtzite structure instead of the zinc blende structure that has been commonly reported. Meanwhile, a bulgy GaSb nanoplate also appears on top of GaAs/GaSb core-shell NWs and possesses a pure zinc blende phase. The growth mode for core-shell morphology and underlying mechanism for crystal phase selection of GaAs/GaSb nanowire heterostructures are discussed in detail.
authors: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083 China.
authors: Suixing
authors: S
authors: Shi
authors: Materials Engineering, The University of Queensland, St. Lucia, Brisbane, QLD 4072 Australia.
authors: Zhi
authors: Z
authors: Zhang
authors: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083 China.
authors: Zhenyu
authors: Z
authors: Lu
authors: College of Optical and Electronic Technology, China Jiliang University, Hangzhou, China.
authors: Haibo
authors: H
authors: Shu
authors: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083 China.
authors: Pingping
authors: P
authors: Chen
authors: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083 China.
authors: Ning
authors: N
authors: Li
authors: Materials Engineering, The University of Queensland, St. Lucia, Brisbane, QLD 4072 Australia ; Center for Microscopy and Microanalysis, The University of Queensland, St. Lucia, Brisbane, QLD 4072 Australia.
authors: Jin
authors: J
authors: Zou
authors: National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, 500 Yu Tian Road, Shanghai, 200083 China.
authors: Wei
authors: W
authors: Lu
keywords: Core-shell; GaSb; Heterostructure nanowire; Molecular beam epitaxy; Wurtzite