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Article Dans Une Revue Physical Review Letters Année : 2011

Enhanced Eshelby Twist on Thin Wurtzite InP Nanowires and Measurement of Local Crystal Rotation

Résumé

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.

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hal-01256517 , version 1 (15-01-2016)

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L. H. G. Tizei, A. J. Craven, L. F. Zagonel, M. Tencé, O. Stéphan, et al.. Enhanced Eshelby Twist on Thin Wurtzite InP Nanowires and Measurement of Local Crystal Rotation. Physical Review Letters, 2011, 107 (19), ⟨10.1103/PhysRevLett.107.195503⟩. ⟨hal-01256517⟩
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