Long-Range Spin-Triplet Helix in Proximity Induced Superconductivity in Spin-Orbit-Coupled Systems

Abstract

We study proximity induced triplet superconductivity in a spin-orbit-coupled system, and show that the \textbf{d} vector of the induced triplet superconductivity undergoes precession that can be controlled by varying the relative strengths of Rashba and Dresselhaus spin-orbit couplings. In particular, a long-range spin-triplet helix is predicted when these two spin-orbit couplings have equal strengths. We also study the Josephson junction geometry and show that a transition between 0 and $\pi$ junctions can be induced by controlling the spin-orbit coupling with a gate voltage. An experimental setup is proposed to verify these effects. Conversely, the observation of these effects can serve as a direct confirmation of triplet superconductivity.

5 pages, four figures plus supplementary material, published version

References in corpus (8)

• A spin triplet supercurrent through the half-metallic ferromagnet CrO2
• An Exact SU(2) Symmetry and Persistent Spin Helix in a Spin-Orbit Coupled System
• Emergence of the persistent spin helix in semiconductor quantum wells
• Tunable Supercurrent Through Semiconductor Nanowires
• Evidence for Triplet Superconductivity in a Superconductor-Ferromagnet Spin Valve
• Spin Imbalance and Spin-Charge Separation in a Mesoscopic Superconductor
• Non-diffusive spin dynamics in a two-dimensional electron gas
• 0-pi Transitions in a Superconductor/Chiral Ferromagnet/Superconductor Junction induced by a Homogeneous Cycloidal Spiral

Cited by in corpus (21)

• Persistent Spin Textures in Semiconductor Nanostructures
• Odd-frequency superconducting pairing in one-dimensional systems
• Proximity-induced triplet superconductivity in Rashba materials
• Spontaneous Edge Accumulation of Spin Currents in Finite-Size Two-Dimensional Diffusive Spin-Orbit Coupled SFS Heterostructures
• Odd-frequency superconducting pairing in junctions with Rashba spin-orbit coupling
• Theory of Tunneling Spectroscopy in Unconventional $p$-wave Magnet-Superconductor Hybrid Structures
• Josephson effect and odd-frequency pairing in superconducting junctions with unconventional magnets
• Universal spin-triplet superconducting correlations of Majorana fermions
• Majorana spintronics
• Switchable Josephson current in junctions with spin-orbit coupling
• Gapped triplet $p$-wave superconductivity in strong spin-orbit-coupled semiconductor quantum wells in proximity to $s$-wave superconductor
• Gapped superconductivity with all symmetries in InSb (110) quantum wells in proximity to s-wave superconductor in Fulde-Ferrell-Larkin-Ovchinnikov phase or with a supercurrent
• Magnetization Reversal by Tuning Rashba Spin-Orbit Interaction and Josephson Phase in a Ferromagnetic Josephson Junction
• Fulde-Ferrell-Larkin-Ovchinnikov state in spin-orbit-coupled superconductors
• Proximity effect in a ferromagnetic semiconductor with spin-orbit interactions
• Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond
• Tunneling conductance in superconducting junctions with $p$-wave unconventional magnets breaking time-reversal symmetry
• Josephson current between two $p$-wave superconducting nanowires in the presence of Rashba spin-orbit interaction and Zeeman magnetic fields
• Chirality and spin transformation of triplet Cooper pairs upon interaction with singlet condensate
• Superconducting spin properties of Majorana nanowires and the associated superconducting anomalous Hall effect
• Josephson effect in multi-terminal superconductor-ferromagnet junctions coupled via triplet components