Thermoelectric current in topological insulator nanowires with impurities

Abstract

In this paper we consider charge current generated by maintaining a temperature difference over a nanowire at zero voltage bias. For topological insulator nanowires in a perpendicular magnetic field the current can change sign as the temperature of one end is increased. Here we study how this thermoelectric current sign reversal depends on magnetic field and how impurities affect the size of the thermoelectric current. We consider both scalar and magnetic impurities and show that their influence on the current are quite similar, although the magnetic impurities seem to be more effective in reducing the effect. For moderate impurity concentration the sign reversal persists.

8 pages, 3 figures

References in corpus (10)

• Aharonov-Bohm oscillations in disordered topological insulator nanowires
• Quantum interference and Aharonov-Bohm oscillations in topological insulators
• Anomalous Aharonov-Bohm conductance oscillations from topological insulator surface states
• Snake Trajectories in Ultraclean Graphene p-n Junctions
• Magnetic states in prismatic core multishell nanowires
• Strongly nonlinear thermovoltage and heat dissipation in interacting quantum dots
• Thermoelectric performance of classical topological insulator nanowires
• Reversal of thermoelectric current in tubular nanowires
• Conductance fluctuations and disorder induced $\nu =0$ quantum Hall plateau in topological insulator nanowires
• Ballistic Anisotropic Magnetoresistance in Core Shell Nanowires and Rolled-up Nanotubes

Cited by in corpus (5)

• Conductance features of core-shell nanowires determined by the internal geometry
• 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
• Anisotropic transport properties in prismatic topological insulator nanowires