Conference Presentation (Invited)

FZJ-2024-00255

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Ab initio study of magnetic doping in an Ising superconductor

Hemmati, M. (Corresponding author)FZJ* ; Rüssmann, P.FZJ* ; Blügel, S.FZJ*

2023

Abstract: The layered superconductor NbSe2 displays unconventional Ising superconductivity that remains resilient to specific orientations of external magnetic fields. To investigate this behavior, we employed a combination of the Bogoliubov-de-Gennes formalism within the Korringa-Kohn-Rostoker Green function method and the Coherent Potential Approximation. Our study focused on understanding the impact of dilute concentrations of magnetic transition-metal impurities on the superconducting properties of NbSe2.The ab initio results revealed a reduction in superconductivity at higher concentrations of magnetic impurities, aligning with predictions from the Abrikosov-Gorkov theory.

Keyword(s): Condensed Matter Physics (2nd) ; Magnetism (2nd)

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Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)

Research Program(s):

1. 5211 - Topological Matter (POF4-521) (POF4-521)
2. DFG project 390534769 - EXC 2004: Materie und Licht für Quanteninformation (ML4Q) (390534769) (390534769)

Appears in the scientific report 2023

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