Helical Topological Superconducting Pairing at Finite Excitation Energies

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

Abstract

We propose helical topological superconductivity away from the Fermi surface in three-dimensional time-reversal-symmetric odd-parity multiband superconductors. In these systems, pairing between electrons originating from different bands is responsible for the corresponding topological phase transition. Consequently, a pair of helical topological Dirac surface states emerges at finite excitation energies. These helical Dirac surface states are tunable in energy by chemical potential and strength of band splitting. They are protected by time-reversal symmetry combined with crystalline twofold rotation symmetry. We suggest concrete materials in which this phenomenon could be observed.

Details

Original languageEnglish
Article number266201
Number of pages8
JournalPhysical review letters
Volume132
Issue number26
Publication statusPublished - 24 Jun 2024
Peer-reviewedYes

External IDs

Scopus 85197872400

Keywords

ASJC Scopus subject areas

Keywords

  • topologische Supraleitung, topological superconductivity