Anomalous differential conductance of In-Bi2Te3 contact
R. Yang, G. Yu
TL;DR
This paper investigates the unusual differential conductance behavior in In/Bi2Te3 contacts at cryogenic temperatures, revealing that Andreev reflection at the superconducting interface causes the anomalies observed.
Contribution
It provides new insights into the transport properties of In/Bi2Te3 interfaces, highlighting the role of Andreev reflection in anomalous conductance features.
Findings
Anomalous zero/finite bias differential conductance observed
Dependence on magnetic field and temperature studied
Andreev reflection identified as key mechanism
Abstract
The differential conductance of In/Bi2Te3 contact under cryogenic temperature is investigated. Anomalous zero/finite bias differential conductance has been observed. The dependence of the observed anomalous differential conductance on magnetic field and temperature is studied. Data analysis indicates that the anomalous differential conductance is caused by the peculiar transport properties of the superconducting Indium/Bi2Te3 interface where Andreev reflection plays a key role.
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Topological Materials and Phenomena · Quantum and electron transport phenomena