Disorder induced superconducting ratchet effect in nanowires

Abstract

A dc voltage drop develops along amorphous indium oxide nanowires that are exposed to an ac bias source. This voltage is anti-symmetric with magnetic field and is characterized by sample specific quasi-periodic magneto-voltage oscillations. The voltage magnitude increases with decreasing temperature below $T_C$ but saturates at low T. As the disorder of the sample is decreased, the dc voltage is suppressed. We suggest that this rectification is a manifestation of the superconducting ratchet effect in which disorder and geometrical confinement play the role of asymmetric pinning centers. This effect demonstrates the importance of inherent inhomogeneity and vortex motion in the superconductor-insulator transition of disordered superconductors.

4 pages, 4 figures

References in corpus (9)

• Localization of preformed Cooper-pairs in disordered superconductors
• Nature of the superconductor-insulator transition in disordered superconductors
• Inhomogeneous Pairing in Highly Disordered s-wave Superconductors
• Nanowire Acting as a Superconducting Quantum Interference Device
• Vortex motion rectification in Josephson junction arrays with a ratchet potential
• Theory of Magneto-resistance of Disordered Superconducting Films
• Scale dependent superconductor-insulator transition
• Practical vortex diodes from pinning enhanced YBa2Cu3O7-d
• An inhomogeneous Josephson phase in thin-film and High-Tc superconductors

Cited by in corpus (14)

• Compositional disorder and tranport peculiarities in the amorphous indium-oxides
• Quantum criticality at the superconductor to insulator transition revealed by specific heat measurements
• Quantum criticality at the superconductor insulator transition probed by the Nernst effect
• Evidence for Superconducting Phase Coherence in the Metallic/Insulating Regime of the LaAlO3-SrTiO3 Interface Electron System
• AC Measurement of the Nernst effect of thin films at low temperatures
• Structural dynamics in thermal-treatment of amorphous indium-oxide films
• Tunneling probe of fluctuating superconductivity in disordered thin films
• Enhancement of Superconductivity upon reduction of carrier density in proximitized graphene
• Universal Voltage Fluctuations in Disordered Superconductors
• Nano-Ratchet sets free electrical power even without intentional excitation
• Proximitized insulators from disordered superconductors
• Conductance Oscillations in a Topological Insulator-Disordered Superconductor Hybrid Interface
• Transient Superdiffusive Motion on a Disordered Ratchet Potential
• On the relation between disorder and homogeneity in an amorphous metal