TUTCRIS - Tampereen teknillinen yliopisto

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Engineering nodal topological phases in Ising superconductors by magnetic superstructures

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Yksityiskohdat

AlkuperäiskieliEnglanti
Artikkeli013022
Sivumäärä9
JulkaisuNew Journal of Physics
Vuosikerta22
Numero1
DOI - pysyväislinkit
TilaJulkaistu - 2020
OKM-julkaisutyyppiA2 Katsausartikkeli

Tiivistelmä

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.

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