Voltage controllable superconducting state in the multi-terminal superconductor-normal metal bridge
arXiv:2105.06780 · doi:10.1103/PhysRevB.103.174507
Abstract
We study voltage controllable superconducting state in multi-terminal bridge composed of the dirty superconductor/pure normal metal (SN) bilayer and pure normal metal. In the proposed system small control current flows via normal bridge, creates voltage drop and modifies distribution function of electrons in connected SN bilayer. In case of long normal bridge the voltage induced nonequilibrium effects could be interpreted in terms of increased local electron temperature. In this limit we experimentally find large sensitivity of critical curent of Cu/MoN/Pt-Cu bridge to and relatively large current gain which originate from steep dependence of on temperature and large (comparable with theoretical depairing current of superconducting bridge). In the short normal bridge deviation from equilibrium cannot be described by simple increase of local temperature but we also theoretically find large sensitivity of to control current/voltage. In this limit we predict existence at finite of so called in-plane Fulde-Ferrell state with spontaneous currents in SN bilayer. We argue that its appearance is connected with voltage induced paramagnetic response in N layer.
arXiv comment8 pages, 5 figures
References in corpus (21)
- Odd triplet superconductivity in superconductor/ferromagnet multilayered structures
- Local Density of States in a Dirty Normal Metal connected to a Superconductor
- Josephson current in superconductor-ferromagnet structures with a nonhomogeneous magnetization
- Metallic supercurrent field-effect transistor
- Energy Resolved Supercurrent between two superconductors
- A superconducting switch actuated by injection of high energy electrons
- Vanishing Meissner effect as a hallmark of in-plane FFLO instability in superconductor - ferromagnet layered systems
- Magnetotransport Experiments on Fully Metallic Superconducting Dayem Bridge Field-Effect Transistors
- High-Energy Quasiparticle Injection into Mesoscopic Superconductors
- Broken translational and time-reversal symmetry in superconducting films
- Critical voltage of a mesoscopic superconductor
- Evanescent states and non-equilibrium in driven superconducting nanowires
- Bi-stability in voltage-biased NISIN structures
- Current-carrying states in FFLO superconductors
- Temperature controlled FFLO instability in superconductor-ferromagnet hybrids
- Inhomogeneous state in non-equilibrium superconductor/normal metal tunnel structures: a LOFF-like phase for non-magnetic systems
- A novel route to a finite center-of-mass momentum pairing state; current driven FFLO state
- In-plane FFLO instability in superconductor-normal metal bilayer system under non-equilibrium quasiparticle distribution
- Paramagnetic Meissner effect in voltage-biased proximity systems
- Paramagnetic Meissner, vortex and 'onion' ground states in Fulde-Ferrell finite-size superconductor
- Symmetric and asymmetric states in mesoscopic superconducting wire in voltage driven regime