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
University of Naples Federico II
Sophie Charpentier
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
P. Lucignano
University of Naples Federico II
Superconductors, oxides and other innovative materials and devices
D. Massarotti
University of Naples Federico II
Superconductors, oxides and other innovative materials and devices
Riccardo Arpaia
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
F. Tafuri
University of 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
University of Naples 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. 503 162-165Subject Categories
Physical Sciences
DOI
10.1016/j.physc.2014.04.047