Reversal of thermoelectric current in tubular nanowires

Abstract

We calculate the charge current generated by a temperature bias between the two ends of a tubular nanowire. We show that in the presence of a transversal magnetic field the current can change sign, i.e., electrons can either flow from the hot to the cold reservoir, or in the opposite direction, when the temperature bias increases. This behavior occurs when the magnetic field is sufficiently strong, such that Landau and snaking states are created, and the energy dispersion is non-monotonic with respect to the longitudinal wave vector. The sign reversal can survive in the presence of impurities. We predict this result for core/shell nanowires, for uniform nanowires with surface states due to the Fermi level pinning, and for topological insulator nanowires.

Main text and Supplemental Material (8 pages, 7 figures)

References in corpus (10)

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• A thermally driven out-of-equilibrium two-impurity Kondo system
• Shifted Landau levels in curved graphene sheets
• Generalized Master Equation Approach to Time-Dependent Many-Body Transport
• Thermoelectric properties of tubular nanowires in the presence of a transverse magnetic field
• Jackiw-Rebbi zero modes in non-uniform topological insulator nanowire
• Nonlocal thermoelectric detection of interaction and correlations in edge states
• Thermoelectric current in topological insulator nanowires with impurities
• Transport in topological insulator nanowires
• Magnetic field mediated conductance oscillation in graphene p-n junctions
• Graph theoretic analysis of three-terminal quantum dot thermocouples: Onsager relations and spin-thermoelectric effects
• Electromagnetic field emitted by core-shell semiconductor nanowires driven by an alternating current
• Angle-dependent Weiss oscillations in a nanocorrugated two-dimensional electron gas
• Anisotropic transport properties in prismatic topological insulator nanowires
• Charge and heat currents in prismatic tubular nanowires
• Effect of Impurities on Charge and Heat Transport in Tubular Nanowires