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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, L H G
Craven, A J
Zagonel, L F
Tencé, M
Stéphan, O
Chiaramonte, T
Cotta, M A
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.
Citation: Physical Review Letters. v. 107, n. 19, p. 195503, 2011-Nov.
Rights: aberto
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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