Conductance oscillations of core-shell nanowires in transversal magnetic fields

Abstract

We analyze theoretically electronic transport through a core-shell nanowire in the presence of a transversal magnetic field. We calculate the conductance for a variable coupling between the nanowire and the attached leads and show how the snaking states, which are low-energy states localized along the lines of vanishing radial component of the magnetic field, manifest their existence. In the strong coupling regime they induce Aharonov-Bohm-like conductance oscillations, which, by decreasing the coupling to the leads, evolve into well resolved peaks. These results show that the formation of snaking states in the nanowire affects magnetoconductance measurements irrespective of the strength of the contacts with the leads. We analyze theoretically electronic transport through a core-shell nanowire in the presence of a transversal magnetic field. We calculate the conductance for a variable coupling between the nanowire and the attached leads and show how the snaking states, which are low-energy states localized along the lines of vanishing radial component of the magnetic field, manifest their existence. In the strong coupling regime they induce Aharonov-Bohm-like conductance oscillations, which, by decreasing the coupling to the leads, evolve into well resolved peaks. The flux periodic oscillations arise due to interference of the snaking states, which is a consequence of backscattering at either the contacts with leads or magnetic/potential barriers in the wire.

6 pages, 5 figures

References in corpus (11)

• Magnetic states in prismatic core multishell nanowires
• Cylindrical Two-Dimensional Electron Gas in a Transverse Magnetic Field
• Unintentional high density p-type modulation doping of a GaAs/AlAs core-multi-shell nanowire
• Electron localization and optical absorption of polygonal quantum rings
• Landau levels, edge states and magneto-conductance in GaAs/AlGaAs core-shell nanowires
• Evanescent channels and scattering in cylindrical nanowire heterostructures
• Aharonov-Bohm oscillations and electron gas transitions in hexagonal core-shell nanowires with an axial magnetic field
• Signature of snaking states in the conductance of core-shell nanowires
• Snaking states on a cylindrical surface in a perpendicular magnetic field
• Fano Regime of Transport through Open Quantum Dots
• Symmetries in the collective excitations of an electron gas in core-shell nanowires

Cited by in corpus (9)

• Tuning Rashba spin-orbit coupling in homogeneous semiconductor nanowires
• Reversal of thermoelectric current in tubular nanowires
• Conductance features of core-shell nanowires determined by the internal geometry
• Quantum shape oscillations in the thermodynamic properties of confined electrons in core-shell nanostructures
• Reconfigurable quantum logic gates using Rashba controlled spin polarized currents
• Thermoelectric properties of tubular nanowires in the presence of a transverse magnetic field
• Transparent boundary conditions for time-dependent electron transport in the R-matrix method with applications to nanostructured interfaces
• Aharonov-Bohm and Altshuler-Aronov-Spivak oscillations in the quasi-ballistic regime in phase-pure GaAs/InAs core/shell nanowires
• Anisotropic transport properties in prismatic topological insulator nanowires