Engineering nodal topological phases in Ising superconductors by magnetic superstructures
Głodzik, Szczepan; Ojanen, Teemu (2020)
Głodzik, Szczepan
Ojanen, Teemu
2020
013022
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202004273825
https://urn.fi/URN:NBN:fi:tuni-202004273825
Kuvaus
Peer reviewed
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.
Kokoelmat
- TUNICRIS-julkaisut [16908]