title: Enhanced Eshelby twist on thin Wurtzite InP nanowires and measurement of local crystal rotation.
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.
authors.affiliation: Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas-UNICAMP, Rua Sérgio Buarque de Holanda 777, 13083-859 Campinas, SP, Brazil. ltizei@ifi.unicamp.br
authors.forename: L H G
authors.initials: LH
authors.lastname: Tizei
authors.forename: A J
authors.initials: AJ
authors.lastname: Craven
authors.forename: L F
authors.initials: LF
authors.lastname: Zagonel
authors.forename: M
authors.initials: M
authors.lastname: Tencé
authors.forename: O
authors.initials: O
authors.lastname: Stéphan
authors.forename: T
authors.initials: T
authors.lastname: Chiaramonte
authors.forename: M A
authors.initials: MA
authors.lastname: Cotta
authors.forename: D
authors.initials: D
authors.lastname: Ugarte