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Engineering nodal topological phases in Ising superconductors by magnetic superstructures

Research output: Contribution to journalReview ArticleScientificpeer-review

Details

Original languageEnglish
Article number013022
Number of pages9
JournalNew Journal of Physics
Volume22
Issue number1
DOIs
Publication statusPublished - 2020
Publication typeA2 Review article in a scientific journal

Abstract

Recently it was discovered that superconductivity in transition metal dichalcogenides (TMDs) is strongly affected by an out-of-plane spin-orbit coupling. In addition, new techniques of fabricating 2d ferromagnets on van der Waals materials are rapidly emerging. Combining these breakthroughs, we propose a realization of nodal topological superconductivity in TMDs by fabricating nanostructured ferromagnets with an in-plane magnetization on the top surface. The proposed procedure does not require application of external magnetic fields and applies to monolayer and multilayer (bulk) systems. The signatures of the topological phase include Majorana flat bandsthat can be directly observed by scanning tunneling microscopy techniques. We concentrate on NbSe2 and argue that the proposed structures demonstrating the nodal topological phase can be realized within existing technology.

ASJC Scopus subject areas

Keywords

  • magnetic impurities, nodal superconductors, topological superconductors

Publication forum classification

Field of science, Statistics Finland