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TT: Fachverband Tiefe Temperaturen

TT 18: Focus Session: Strongly Correlated Quantum States in Moiré Heterostructures (joint session TT/HL/MA)

TT 18.9: Vortrag

Dienstag, 18. März 2025, 13:00–13:15, H36

Proximity-Induced Spin-Triplet Superconducting Correlations in Transition Metal Dichalcogenides — •Florian Kayatz, Jorge Cayao, and Annica Black-Schaffer — Department of Physics and Astronomy, Uppsala University, Box 516, S-751 20 Uppsala, Sweden

The realization of spin-triplet Cooper pairs is a key ingredient for superconducting spintronics. One promising route to achieve this task is by exploiting the strong intrinsic spin-orbit coupling of transition metal dichalcogenides (TMDs). In this work, we consider a TMD layer coupled to a conventional spin-singlet s-wave superconductor and demonstrate the emergence of spin-triplet superconducting correlations. We find that these spin-triplet pair correlations form in the TMD as a proximity-induced effect but also appear in the superconductor as an inverse proximity effect and as a nonlocal phenomenon that exists between the TMD and superconductor. Furthermore, we relate these emergent superconducting correlations to experimentally observable features in the density of states and conductance.

Keywords: Superconductivity; Spintronics; Monolayer Transition Metal Dichalcogenides; Proximity Effect; Spin-Triplet Cooper Pairs