Moiré-enabled topological superconductivity

Kezilebieke Shawulienu*, Viliam Vano, Md Nurul Huda, Markus Aapro, Somesh Chandra Ganguli, Peter Liljeroth, Jose Lado*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)
26 Downloads (Pure)

Abstract

The search for artificial topological superconductivity has been limited by the stringent conditions required for its emergence. As exemplified by the recent discoveries of various correlated electronic states in twisted van der Waals materials, moiré patterns can act as a powerful knob to create artificial electronic structures. Here, we demonstrate that a moiré pattern between a van der Waals superconductor and a monolayer ferromagnet creates a periodic potential modulation that enables the realization of a topological superconducting state that would not be accessible in the absence of the moiré. The magnetic moiré pattern gives rise to Yu–Shiba–Rusinov minibands and periodic modulation of the Majorana edge modes that we detect using low-temperature scanning tunneling microscopy (STM) and spectroscopy (STS). Moiré patterns and, more broadly, periodic potential modulations are powerful tools to overcome the conventional constraints for realizing and controlling topological superconductivity.
Original languageEnglish
Pages (from-to)328–333
JournalNano Letters
Volume22
Issue number1
Early online date3 Jan 2022
DOIs
Publication statusPublished - 12 Jan 2022
MoE publication typeA1 Journal article-refereed

Fingerprint

Dive into the research topics of 'Moiré-enabled topological superconductivity'. Together they form a unique fingerprint.

Cite this