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Type: Artigo de periódico
Title: Enhanced Eshelby Twist on Thin Wurtzite InP Nanowires and Measurement of Local Crystal Rotation
Author: Tizei, LHG
Craven, AJ
Zagonel, LF
Tence, M
Stephan, O
Chiaramonte, T
Cotta, MA
Ugarte, D
Abstract: We have performed a detailed study of the lattice distortions of InP wurtzite nanowires containing an axial screw dislocation. Eshelby predicted that this kind of system should show a crystal rotation due to the dislocation induced torque. We have measured the twisting rate and the dislocation Burgers vector on individual wires, revealing that nanowires with a 10-nm radius have a twist up to 100% larger than estimated from elasticity theory. The strain induced by the deformation has a Mexican-hat-like geometry, which may create a tube-like potential well for carriers.
Country: EUA
Editor: Amer Physical Soc
Citation: Physical Review Letters. Amer Physical Soc, v. 107, n. 19, 2011.
Rights: aberto
Identifier DOI: 10.1103/PhysRevLett.107.195503
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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