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Kondo-like zero-bias conductance anomaly in a three-dimensional topological insulator nanowire.

ABSTRACT: Zero-bias anomalies in topological nanowires have recently captured significant attention, as they are possible signatures of Majorana modes. Yet there are many other possible origins of zero-bias peaks in nanowires--for example, weak localization, Andreev bound states, or the Kondo effect. Here, we discuss observations of differential-conductance peaks at zero-bias voltage in non-superconducting electronic transport through a 3D topological insulator (Bi(1.33)Sb(0.67))Se3 nanowire. The zero-bias conductance peaks show logarithmic temperature dependence and often linear splitting with magnetic fields, both of which are signatures of the Kondo effect in quantum dots. We characterize the zero-bias peaks and discuss their origin.

SUBMITTER: Cho S

PROVIDER: S-EPMC4766402 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature

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Kondo-like zero-bias conductance anomaly in a three-dimensional topological insulator nanowire.

Cho Sungjae S Zhong Ruidan R Schneeloch John A JA Gu Genda G Mason Nadya N

Scientific reports 20160225

Zero-bias anomalies in topological nanowires have recently captured significant attention, as they are possible signatures of Majorana modes. Yet there are many other possible origins of zero-bias peaks in nanowires--for example, weak localization, Andreev bound states, or the Kondo effect. Here, we discuss observations of differential-conductance peaks at zero-bias voltage in non-superconducting electronic transport through a 3D topological insulator (Bi(1.33)Sb(0.67))Se3 nanowire. The zero-bia ...[more]

PMID: 26911258

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