Josephson effect in Al/Bi2Se3/Al coplanar hybrid devices
Journal article, 2014

The edge states of Topological Insulators (TI) are protected against backscattering, thanks to the topological properties arising from their band structure. Coupling a TI to a superconductor (S) can induce unconventional effects, including the creation of Majorana bound states (MBS). The fabrication of coplanar hybrid devices is a fundamental step to pave the way to the understanding of proximity effects in topologically non-trivial systems, and to a large variety of experiments aimed at the possible detection of MBS. We discuss the feasibility and some relevant properties of Al-Bi2Se3-Al coplanar proximity devices. Special attention is devoted to the design of the junction, aimed at enhancing the coupling between the electrodes and the TI.

Proximity effect

junctions

bi2te3

surface-state

single dirac cone

Josephson junctions

topological-insulator

superconducting

Coplanar hybrid devices

Topological insulators

bi2se3

transition

transport

Author

L. Galletti

Superconductors, oxides and other innovative materials and devices

Universita degli Studi di Napoli Federico II

Sophie Charpentier

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

P. Lucignano

Universita degli Studi di Napoli Federico II

Superconductors, oxides and other innovative materials and devices

D. Massarotti

Universita degli Studi di Napoli Federico II

Superconductors, oxides and other innovative materials and devices

Riccardo Arpaia

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

F. Tafuri

Università degli Studi della Campania Luigi Vanvitelli

Superconductors, oxides and other innovative materials and devices

Thilo Bauch

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Y. Suzuki

University of Tsukuba

A. Tagliacozzo

Universita degli Studi di Napoli Federico II

Kazuo Kadowaki

University of Tsukuba

Floriana Lombardi

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Physica C: Superconductivity and its Applications

0921-4534 (ISSN)

Vol. 503 162-165

Subject Categories

Physical Sciences

DOI

10.1016/j.physc.2014.04.047

More information

Latest update

4/11/2018