Proximity effect at superconducting Sn-Bi2Se3 interface

Abstract

We have investigated the conductance spectra of Sn-Bi2Se3 interface junctions down to 250 mK and in different magnetic fields. A number of conductance anomalies were observed below the superconducting transition temperature of Sn, including a small gap different from that of Sn, and a zero-bias conductance peak growing up at lower temperatures. We discussed the possible origins of the smaller gap and the zero-bias conductance peak. These phenomena support that a proximity-effect-induced chiral superconducting phase is formed at the interface between the superconducting Sn and the strong spin-orbit coupling material Bi2Se3.

7 pages, 8 figures

References in corpus (16)

• Topological Insulators
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• The quantum spin Hall effect and topological insulators
• Spin-orbit gap of graphene: First-principles calculations
• Majorana Fermion Induced Resonant Andreev Reflection
• Topological Superconductivity in CuxBi2Se3
• Gate-Voltage Control of Chemical Potential and Weak Anti-localization in Bismuth Selenide
• Probing Neutral Majorana Fermion Edge Modes with Charge Transport
• Manipulation of Majorana fermion, Andreev reflection and Josephson current on topological insulators
• Impurity effect on weak anti-localization in the topological insulator Bi2Te3
• Quantum interference in macroscopic crystals of non-metallic Bi${}_2$Se${}_3$
• Observing Majorana Bound States in p-wave Superconductors Using Noise Measurements in Tunneling Experiments
• Evidence for electron-electron interaction in topological insulator thin films
• Gate-tuned normal and superconducting transport at the surface of a topological insulator
• Electron interaction-driven insulating ground state in Bi2Se3 topological insulators in the two dimensional limit
• Observation of the superconducting proximity effect and possible evidence for Pearl vortices in a candidate topological insulator

Cited by in corpus (38)

• Search for Majorana fermions in superconductors
• Topological Insulator Materials
• Dirac materials
• Pressure-Induced Unconventional Superconducting Phase in the Topological Insulator Bi2Se3
• Proximity-induced high-temperature superconductivity in topological insulators Bi2Se3 and Bi2Te3
• Quantum interference and Aharonov-Bohm oscillations in topological insulators
• Strong Superconducting Proximity Effect in Pb-Bi2Te3 Hybrid Structures
• Tunneling Conductance and Surface States Transition in Superconducting Topological Insulators
• Stability of Majorana Fermions in Proximity-Coupled Topological Insulator Nanowires
• A comprehensive review on topological superconducting materials and interfaces
• Influence of Topological Edge States on the Properties of Al/Bi2Se3/Al Hybrid Josephson Devices
• Interplay between topological insulators and superconductors
• Proximity-effect-induced Superconducting Gap in Topological Surface States - A Point Contact Spectroscopy Study of NbSe2/Bi2Se3 Superconductor-Topological Insulator Heterostructures
• Signature of proximity induced triplet superconductivity in junctions made of the doped topological insulator $\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{e}}_3$ and the s-wave superconductor NbN
• Phase Coherence and Andreev Reflection in Topological Insulator Devices
• Signatures of Topological Superconductivity in Bulk Insulating Topological Insulator BiSbTe${}_{1.25}$Se${}_{1.75}$ in Proximity with Superconducting NbSe${}_2$
• Superconducting proximity effect in a topological insulator using Fe(Te,Se)
• Zero energy bound states in tunneling conductance spectra at the interface of an s-wave superconductor and a topological insulator in NbN-$B{i}_{2}S{e}_3$-Au thin film junctions
• Two-dimensional heavy fermions on the strongly correlated boundaries of Kondo topological insulators
• The origin of bias independent conductance plateaus and zero bias conductance peaks in Bi2Se3/NbSe2 hybrid structures
• Pressure-induced superconductivity in weak topological insulator BiSe
• Quantum transport in topological insulator hybrid structures -- A combination of topological insulator and superconductor
• Proximity effects at the interface of a superconductor and a topological insulator in NbN - Bi_2Se_3 thin film bilayers
• Coulomb Blockade Effects in a Topological Insulator Grown on a High-Tc Cuprate Superconductor
• Gapless helical superconductivity on the surface of a three-dimensional topological insulator
• Conduction spectroscopy of a proximity induced superconducting topological insulator
• Superconducting-contact-induced resistance-anomalies in the 3D topological insulator Bi2Te3
• Observation of superconducting gap spectra of long-range proximity effect in Au/SrTiO${}_3$/SrRuO${}_3$/Sr${}_2$RuO${}_4$ tunnel junctions
• Magnetoresistance and gating effects in ultrathin NbN-$\mathrm{B}{\mathrm{i}}_2\mathrm{S}{\mathrm{e}}_3$ bilayers
• Interaction proximity effect at the interface between a superconductor and a topological insulator quantum well
• Protected gap closing in Josephson junctions constructed on Bi${}_2$Te${}_3$ surface
• Origin of Suppression of Proximity Induced Superconductivity in Bi/Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$ Heterostructure
• Unusual Superconducting Proximity Effect in Magnetically Doped Topological Josephson Junctions
• Pairing instabilities in topological insulator quantum wells
• Modeling Tunneling for the Unconventional Superconducting Proximity Effect
• Quasiparticle interference and resonant states in normal and superconducting line nodal semimetals
• Studies on proximity effect in Mo/Bi1.95Sb0.05Se3 hybrid structure
• Theory of tunneling spectroscopy in a superconducting topological insulator