Enhanced Eshelby twist on thin wurtzite InP nanowires and measurement of local crystal rotation

Tizei, L.H.G., Craven, A., Zagonel, L.F., Tence, M., Stephan, O., Chiaramonte, T., Cotta, M.A. and Ugarte, D. (2011) Enhanced Eshelby twist on thin wurtzite InP nanowires and measurement of local crystal rotation. Physical Review Letters, 107(19), p. 195503. (doi: 10.1103/PhysRevLett.107.195503)

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.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Craven, Professor Alan
• Authors: Tizei, L.H.G., Craven, A., Zagonel, L.F., Tence, M., Stephan, O., Chiaramonte, T., Cotta, M.A., and Ugarte, D.
• Subjects: Q Science > QC Physics
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physical Review Letters
• Publisher: American Physical Society
• ISSN: 0031-9007
• ISSN (Online): 1079-7114
• Published Online: 04 November 2011
• Copyright Holders: Copyright © 2011 American Physical Society
• First Published: First published in Physical Review Letters 107(19):195503
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher