Atomistic modeling of a superconductor-transition-metal dichalcogenide-superconductor Josephson junction

Abstract

Using an atomistic tight-binding model, we study the characteristics of a Josephson junction formed by monolayers of MoS${}_2$ sandwiched between Pb superconducting electrodes. We derive and apply Green's function-based formulation to compute the Josephson current in this system, as well as the local density of states in the junction. Our analysis of diagonal and off-diagonal components of the local density of states reveals the presence of triplet superconducting correlations in the MoS${}_2$ monolayers and spin-polarized subgap (Andreev bound) states. Our formulation can be extended to other systems where atomistic details and large scales are needed to obtain accurate modeling of Josephson junction physics.

17 pages, 10 figures

References in corpus (6)

• A Josephson junction supercurrent diode
• Supercurrent diode effect and magnetochiral anisotropy in few-layer NbSe${}_2$
• Universal Josephson diode effect
• Fractional ac Josephson effect in unconventional superconductors
• Supercurrent decay in ballistic magnetic Josephson junctions
• Role of the quasi-particles in an electric circuit with Josephson junctions

Cited by in corpus (2)

• Strain-Induced Charge Density Waves with Emergent Topological States in Monolayer NbSe2
• Superconducting Proximity Effect in Two-Dimensional Hole Gases