Orbital tunable 0-$\pi$ transitions in Josephson junctions with noncentrosymmetric topological superconductors

Abstract

We investigate the Josephson transport properties in a Josephson junction consisting of a conventional $s$-wave superconductor coupled to a multi-orbital noncentrosymmetric superconductor marked by an orbitally driven inversion asymmetry and isotropic interorbital spin-triplet pairing. Contrary to the canonical single band noncentrosymmetric superconductor, we demonstrate that the local interorbital spin-triplet pairing is tied to the occurrence of sign-changing spin-singlet pair amplitude on different bands with $d$-wave symmetry. Such multi-band $d^{\pm }$-wave state is a unique superconducting configuration that drives unexpected Josephson effects with 0-$\pi$ transitions displaying a high degree of electronic control. Remarkably, we find that the phase state of a noncentrosymmetric/$s$-wave Josephson junction can be toggled between 0 and $\pi$ in multiple ways through a variation of electron filling, strength of the spin-orbital coupling, amplitude of the inversion asymmetry interaction, and junction transparency. These results highlight an intrinsic orbital and electrical tunability of the Josephson response and provide unique paths to unveil the nature of unconventional multiorbital superconductivity as well as inspire innovative designs of Josephson quantum devices.

11 pages, 8 figures

References in corpus (11)

• Unconventional pairing originating from disconnected Fermi surfaces in superconducting LaFeAsO${}_{1-x}$F${}_x$}
• Anomalous Andreev bound state in non-centrosymmetric superconductors
• Surface density of states and topological edge states in non-centrosymmetric superconductors
• Surface bound states and spin currents in non-centrosymmetric superconductors
• Topologically protected flat zero-energy surface bands in non-centrosymmetric superconductors
• Andreev bound states and tunneling characteristics of a non-centrosymmetric superconductor
• Microscopic Theory of Rashba Interaction in Magnetic Metal
• Superconducting Properties of the $s^{\pm }$-wave state: Fe-based superconductors
• Nature of Orbital and Spin Rashba Coupling in the Surface Bands of SrTiO3 and KTaO3
• Tunnelling between non-centrosymmetric superconductors with significant spin-orbit splitting studied theoretically within a two-band treatment
• Josephson response of a conventional and a noncentrosymmetric superconductor coupled via a double quantum dot

Cited by in corpus (14)

• Superconducting phenomena in systems with unconventional magnets
• Josephson effect and odd-frequency pairing in superconducting junctions with unconventional magnets
• Spectroscopic Signatures of Gate-Controlled Superconducting Phases
• Supercurrent rectification with time-reversal symmetry broken multiband superconductors
• Magneto-topological transitions in multicomponent superconductors
• Impact of electrostatic fields in layered crystalline BCS superconductors
• Anomalous Josephson Coupling and High-Harmonics in Non-Centrosymmetric Superconductors with $S$-wave Spin-Triplet Pairing
• Spin-orbital polarization of Majorana edge states in oxides nanowires
• High orbital-moment Cooper pairs by crystalline symmetry breaking
• Frustration driven Josephson phase dynamics
• Spin and orbital Edelstein effect in spin-orbit coupled noncentrosymmetric superconductor
• Magnetic exchange interaction in spin-valve with chiral spin-triplet superconductor
• Particle-hole spectral asymmetry at the edge of multiorbital noncentrosymmetric superconductors
• Josephson effects between the Kitaev ladder superconductors