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Title: Structural properties and growth mechanism of Cd{sub 3}As{sub 2} nanowires

Cadmium arsenide (Cd{sub 3}As{sub 2}) is a material well-known for its very high room-temperature carrier mobility. Recently, it has also been shown to be a three-dimensional Dirac semimetal—the three-dimensional analogue of graphene. Here, we present a detailed structural study of the self-catalyzed growth of Cd{sub 3}As{sub 2} nanowires. The crystal structure is confirmed using X-ray diffraction and transmission electron microscopy. Scanning electron microscopy and energy-dispersive X-ray spectroscopy are used to gain insight into the vapor-solid growth mechanism. The role of group II and V elements is reversed in contrast to III-V and other II-V systems, and the tips are found to be As-rich.
Authors:
;  [1]
  1. Department of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU (United Kingdom)
Publication Date:
OSTI Identifier:
22395784
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 1; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CADMIUM; CADMIUM ARSENIDES; CARRIER MOBILITY; GAIN; GRAPHENE; NANOWIRES; SCANNING ELECTRON MICROSCOPY; SEMIMETALS; SOLIDS; TEMPERATURE RANGE 0273-0400 K; THREE-DIMENSIONAL CALCULATIONS; THREE-DIMENSIONAL LATTICES; TRANSMISSION ELECTRON MICROSCOPY; VAPORS; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY