Topological superconductivity in planar Josephson junctions and dc-SQUIDs

Barış Pekerten; Joseph D. Pakizer; Benjamin S. Hawn; Alex Matos-Abiague

doi:10.1117/12.2595368

1 August 2021 Topological superconductivity in planar Josephson junctions and dc-SQUIDs

Barış Pekerten, Joseph D. Pakizer, Benjamin S. Hawn, Alex Matos-Abiague

Proceedings Volume 11805, Spintronics XIV; 118050D (2021) https://doi.org/10.1117/12.2595368
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States

Abstract

We theoretically investigate the emergence of topological superconductivity in dc-SQUIDs in the presence of Rashba spin-orbit coupling and an in-plane magnetic field. The transmission of the individual planar Josephson junctions (JJs) can be controlled by top gates, switching from a single JJ to a dc-SQUID behavior. The transition to the topological phase in the single JJ configuration is sensible to the direction of the in-plane magnetic field and we show that it is accompanied by minima in the critical current, serving as experimental signatures to identify the phase transition. Furthermore, the topological phase transitions in each of the JJs can be individually tuned by top gates. We show that there are distinctive signatures in the critical current and phase shift of the dc-SQUID for cases when none, either or both junctions are in the topological regime. We also investigate the effects of electrostatic disorder on the topological superconducting state of single JJs.

Conference Presentation

Citation Download Citation

Barış Pekerten, Joseph D. Pakizer, Benjamin S. Hawn, and Alex Matos-Abiague "Topological superconductivity in planar Josephson junctions and dc-SQUIDs", Proc. SPIE 11805, Spintronics XIV, 118050D (1 August 2021); https://doi.org/10.1117/12.2595368

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available