# Josephson supercurrent in a topological insulator without a bulk shunt

@article{Snelder2014JosephsonSI, title={Josephson supercurrent in a topological insulator without a bulk shunt}, author={Marieke Snelder and Cor G. Molenaar and Y. Pan and D. Wu and Y. K. Huang and Anne de Visser and A A Golubov and Wilfred G. van der Wiel and Hans Hilgenkamp and Mark S. Golden and Alexander Brinkman}, journal={Superconductor Science and Technology}, year={2014}, volume={27} }

A Josephson supercurrent has been induced into the three-dimensional topological insulator Bi 1.5 ?> Sb 0.5 ?> Te 1.7 ?> Se 1.3 ?> . We show that the transport in Bi 1.5 ?> Sb 0.5 ?> Te 1.7 ?> Se 1.3 ?> exfoliated flakes is dominated by surface states and that the bulk conductivity can be neglected at the temperatures where we study the proximity induced superconductivity. We prepared Josephson junctions with widths in the order of 40 nm and lengths in the order of 50–80 nm on several Bi 1.5…

## 17 Citations

Signatures of induced superconductivity in AlOx-capped topological heterostructures

- PhysicsSolid-State Electronics
- 2019

Conduction spectroscopy of a proximity induced superconducting topological insulator

- Physics
- 2015

The combination of superconductivity and the helical spin-momentum locking at the surface state of a topological insulator (TI) has been predicted to give rise to p-wave superconductivity and…

Anomalous Fraunhofer Patterns in Gated Josephson Junctions Based on the Bulk-Insulating Topological Insulator BiSbTeSe2.

- PhysicsNano letters
- 2018

This work found that, by employing an advanced fitting procedure to use the maximum entropy method in a Monte Carlo algorithm, the anomalous Fraunhofer patterns are explained as a result of inhomogeneous supercurrent distributions on the TI surface in the junction.

Novel self-epitaxy for inducing superconductivity in the topological insulator
(Bi1−xSbx)2Te3

- Physics
- 2020

Using the superconducting proximity effect for engineering a topological superconducting state in a topological insulator (TI) is a promising route to realize Majorana fermions. However, epitaxial…

Novel self-epitaxy for inducing superconductivity in a topological insulator with a record-high transparency

- Physics
- 2019

The seminal proposal by Fu and Kane to use the superconducting proximity effect for engineering a topological superconducting (TSC) state in a topological insulator (TI) has been extended to various…

Proximity‐Effect‐Induced Superconductivity in Nb/Sb2Te3‐Nanoribbon/Nb Junctions

- PhysicsAnnalen der Physik
- 2020

Nanohybrid superconducting junctions using antimony telluride (Sb2Te3) topological insulator nanoribbons and Nb superconducting electrodes are fabricated using electron beam lithography and magnetron…

Revealing Surface States in In-Doped SnTe Nanoplates with Low Bulk Mobility.

- Physics, Materials ScienceNano letters
- 2015

It is shown that nanostructures and reducing the bulk mobility are effective strategies to reveal the surface states and test for topological superconductors.

Tunneling spectroscopy and Josephson current of superconductor-ferromagnet hybrids on the surface of a 3D TI

- Physics
- 2015

We investigate the charge transport property of superconductor (S)/normal metal (N)/ ferromagnet insulator (FI)/(normal metal) N’ and S/N/FI/N’/S Josephson junctions on a three-dimensional…

Proximity-induced supercurrent through topological insulator based nanowires for quantum computation studies

- PhysicsScientific Reports
- 2018

The dominant role of ballistic topological surface states in propagating the long-range proximity induced superconducting order with high IcRN product in long Bi2Se3 junctions is demonstrated and large upper critical magnetic fields exceeding the Chandrasekhar-Clogston limit suggests the existence of robust superconducted order with spin-triplet cooper pairing.

Proximity induced time-reversal topological superconductivity in
Bi2Se3
films without phase tuning

- PhysicsPhysical Review B
- 2019

Many proposals to generate a time-reversal invariant topological superconducting phase are based on imposing a $\pi$ phase difference between the superconducting leads proximitizing a nanostructure.…

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