Conductance fluctuations and disorder induced $\nu =0$ quantum Hall plateau in topological insulator nanowires

Abstract

Clean topological insulators exposed to a magnetic field develop Landau levels accompanied by a nonzero Hall conductivity for the infinite slab geometry. In this work we consider the case of disordered topological insulator nanowires and find, in contrast, that a zero Hall plateau emerges within a broad energy window close to the Dirac point. We numerically calculate the conductance and its distribution for a statistical ensemble of disordered nanowires, and use the conductance fluctuations to study the dependence of the insulating phase on system parameters, such as the nanowire length, disorder strength and the magnetic field.

7 pages, 7 figures

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Cited by in corpus (4)

• Strain-gradient induced topological transition in bent nanoribbons of the Dirac semimetal Cd3As2
• Transport in topological insulator nanowires
• Aharanov-Bohm oscillations and perfectly transmitted mode in amorphous topological insulator nanowires
• Anisotropic transport properties in prismatic topological insulator nanowires