Document Type

Article

Publication Date

2018

College/Unit

Eberly College of Arts and Sciences

Department/Program/Center

Physics and Astronomy

Abstract

We consider core–shell nanowires with prismatic geometry contacted with two or more superconductors in the presence of a mag- netic field applied parallel to the wire. In this geometry, the lowest energy states are localized on the outer edges of the shell, which strongly inhibits the orbital effects of the longitudinal magnetic field that are detrimental to Majorana physics. Using a tight-binding model of coupled parallel chains, we calculate the topological phase diagram of the hybrid system in the presence of non-vanishing transverse potentials and finite relative phases between the parent superconductors. We show that having finite relative phases strongly enhances the stability of the induced topological superconductivity over a significant range of chemical potentials and reduces the value of the critical field associated with the topological quantum phase transition.

Source Citation

Stanescu, T. D., Sitek, A., & Manolescu, A. (2018). Robust topological phase in proximitized core–shell nanowires coupled to multiple superconductors. Beilstein Journal of Nanotechnology, 9, 1512–1526. https://doi.org/10.3762/bjnano.9.142

Comments

© 2018 Stanescu et al.; licensee Beilstein-Institut. License and terms: see end of document.

Share

COinS
 
 

To view the content in your browser, please download Adobe Reader or, alternately,
you may Download the file to your hard drive.

NOTE: The latest versions of Adobe Reader do not support viewing PDF files within Firefox on Mac OS and if you are using a modern (Intel) Mac, there is no official plugin for viewing PDF files within the browser window.