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

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 1.33Sb 0.67)Se 3 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. As a result, we characterize the zero-bias peaks and discuss their origin.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [3]
  1. Korea Advanced Institute of Science and Technology, Daejeon (Republic of Korea); Univ. of Illinois, Urbana, IL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Univ. of Illinois, Urbana, IL (United States)
Publication Date:
Report Number(s):
BNL-112057-2016-JA
Journal ID: ISSN 2045-2322; R&D Project: PO010; KC0201060
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal Issue: 6; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; electronic properties and materials; topological insulators
OSTI Identifier:
1247981

Cho, Sungjae, Zhong, Ruidan, Schneeloch, John A., Gu, Genda, and Mason, Nadya. Kondo-like zero-bias conductance anomaly in a three-dimensional topological insulator nanowire. United States: N. p., Web. doi:10.1038/srep21767.
Cho, Sungjae, Zhong, Ruidan, Schneeloch, John A., Gu, Genda, & Mason, Nadya. Kondo-like zero-bias conductance anomaly in a three-dimensional topological insulator nanowire. United States. doi:10.1038/srep21767.
Cho, Sungjae, Zhong, Ruidan, Schneeloch, John A., Gu, Genda, and Mason, Nadya. 2016. "Kondo-like zero-bias conductance anomaly in a three-dimensional topological insulator nanowire". United States. doi:10.1038/srep21767. https://www.osti.gov/servlets/purl/1247981.
@article{osti_1247981,
title = {Kondo-like zero-bias conductance anomaly in a three-dimensional topological insulator nanowire},
author = {Cho, Sungjae and Zhong, Ruidan and Schneeloch, John A. and Gu, Genda and Mason, Nadya},
abstractNote = {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 (Bi1.33Sb0.67)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. As a result, we characterize the zero-bias peaks and discuss their origin.},
doi = {10.1038/srep21767},
journal = {Scientific Reports},
number = 6,
volume = 6,
place = {United States},
year = {2016},
month = {2}
}