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High-Temperature Majorana Zero Modes

Alejandro Mercado, Sharmistha Sahoo, and M. Franz
Phys. Rev. Lett. 128, 137002 – Published 30 March 2022
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Abstract

We employ analytical and numerical approaches to show that unpaired Majorana zero modes can occur in cores of Abrikosov vortices at the interface between a three-dimensional topological insulator, such as Bi2Se3, and a twisted bilayer of high-Tc cuprate superconductor, such as Bi2Sr2CaCu2O8+δ. When the twist angle is close to 45° the latter has been predicted to form a fully gapped topological superconductor up to temperatures approaching its native Tc90K. Majorana zero modes in these structures will persist up to unprecedented high temperatures and, depending on the quality of the interface, may be protected by gaps with larger magnitudes than other candidate systems.

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  • Received 28 June 2021
  • Revised 28 September 2021
  • Accepted 23 February 2022

DOI:https://doi.org/10.1103/PhysRevLett.128.137002

© 2022 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

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High-Temperature Majoranas

Published 30 March 2022

A new proposal for generating Majorana zero modes—electronic states with potential for quantum computing—would not require sub-Kelvin temperatures.

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Authors & Affiliations

Alejandro Mercado1, Sharmistha Sahoo1,2, and M. Franz1

  • 1Department of Physics and Astronomy, and Quantum Matter Institute, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z1
  • 2Department of Physics, Indian Institute of Science, Bengaluru, India 560012

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Issue

Vol. 128, Iss. 13 — 1 April 2022

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