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Prediction of intrinsic topological superconductivity in Mn-doped GeTe monolayer from first-principles

Physics

Prediction of intrinsic topological superconductivity in Mn-doped GeTe monolayer from first-principles

X. Zhang, K. Jin, et al.

This groundbreaking research by Xiaoming Zhang, Kyung-Hwan Jin, Jiahao Mao, Mingwen Zhao, Zheng Liu, and Feng Liu introduces a first-principles method to predict topological superconductors. The study identifies a Mn-doped GeTe monolayer as a Class D TSC, showcasing unique chiral Majorana edge modes and a significant TSC phase at low temperatures, paving the way for future experimental explorations in this exciting area.

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Playback language: English
Abstract
This research develops a first-principles approach to predict topological superconductors (TSCs) by self-consistently solving the Bogoliubov-de Gennes (BdG) equation. The method incorporates Rashba spin-orbit coupling, Zeeman splitting, and electron-phonon coupling. It predicts Mn-doped GeTe monolayer as a Class D TSC with a Chern number of -1 and chiral Majorana edge modes, suggesting a TSC phase at ~40 mK and Mn concentration of x~0.015%. This approach offers a valuable tool for guiding future experimental TSC research.
Publisher
npj Computational Materials
Published On
Mar 26, 2021
Authors
Xiaoming Zhang, Kyung-Hwan Jin, Jiahao Mao, Mingwen Zhao, Zheng Liu, Feng Liu
Tags
topological superconductors
Bogoliubov-de Gennes
Rashba spin-orbit coupling
Chern number
Majorana edge modes
Mn-doped GeTe
electron-phonon coupling

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