Observation of Giant Positive Magnetoresistance in a Cooper Pair Insulator

Abstract

Ultrathin amorphous Bi films, patterned with a nano-honeycomb array of holes, can exhibit an insulating phase with transport dominated by the incoherent motion of Cooper pairs of electrons between localized states. Here we show that the magnetoresistance of this Cooper pair insulator phase is positive and grows exponentially with decreasing temperature, for temperatures well below the pair formation temperature. It peaks at a field estimated to be sufficient to break the pairs and then decreases monotonically into a regime in which the film resistance assumes the temperature dependence appropriate for weakly localized single electron transport. We discuss how these results support proposals that the large MR peaks in other unpatterned, ultrathin film systems disclose a Cooper Pair Insulator phase and provide new insight into the Cooper pair localization.

References in corpus (6)

• Nature of the superconductor-insulator transition in disordered superconductors
• Disorder-Induced Inhomogeneities of the Superconducting State Close to the Superconductor-Insulator Transition
• Eigenfunction fractality and pseudogap state near superconductor-insulator transition
• Localized Superconductivity in the Quantum-Critical Region of the Disorder-Driven Superconductor-Insulator Transition in TiN Thin Films
• Collective transport in the insulating state of Josephson junction arrays
• Evidence of Spatially Inhomogeous Pairing on the Insulating Side of a Disorder-Tuned Superconductor-Insulator Transition

Cited by in corpus (40)

• Localization of preformed Cooper-pairs in disordered superconductors
• Fractal superconductivity near localization threshold
• Quantum breakdown of superconductivity in low-dimensional materials
• Phase diagram of a strongly disordered s-wave superconductor, NbN, close to the metal-insulator transition
• Electrical Control of the Superconducting-to-Insulating Transition in Graphene/Metal Hybrids
• Evidence for a Finite Temperature Insulator
• Superconductor-Insulator transition and energy localization
• Cooper pair insulator in amorphous films induced by nanometer-scale thickness variations
• Nanopattern-stimulated superconductor-insulator transition in thin TiN films
• High field termination of a Cooper-pair insulator
• Superconductor to weak-insulator transitions in disordered Tantalum Nitride films
• Magnetic Field Tuned Quantum Phase Transition in the Insulating Regime of Ultrathin Amorphous Bi Films
• Evolution of superconducting correlations within magnetic-field-decoupled CuO(2) layers of La(1.905)Ba(0.095)CuO(4)
• Emergent granularity and pseudogap near the superconductor-insulator transition
• Thermal Phase Transition in Two-Dimensional Disordered Superconductors: Kosterlitz-Thouless vs Percolation
• How to measure the spatial correlations in disordered Berezinski-Kosterlitz-Thouless transition ?
• Mystery of Excess Low Energy States in a Disordered Superconductor in a Zeeman Field
• Cooper pairs under the action of disorder and strong magnetic field
• Electrostatic Tuning of the Properties of Disordered Indium Oxide Films near the Superconductor-Insulator Transition
• Magnetic field-tuned superconductor/insulator transition in TiN nanostrips
• Resistive transition in frustrated Josephson-junction arrays on a honeycomb lattice
• Disorder Influences the Quantum Critical Transport at a Superconductor to Insulator Transition
• Excessive Noise as a Test for Many-Body Localization
• Zero-temperature transition and correlation-length exponent of the frustrated XY model on a honeycomb lattice
• Two-component Coulomb Glass in Disordered Superconducting Films
• Vortex excitations in the Insulating State of an Oxide Interface
• Instability of insulators near quantum phase transitions
• Origin of Topological Order in a Cooper Pair Insulator
• Quasiparticle Screening near a Bosonic Superconductor-Insulator Transition Revealed by Magnetic Impurity Doping
• The Temperature dependence of the magneto-resistance peak in highly disordered superconductors
• Ordered phases and phase transitions in the fully frustrated XY model on a honeycomb lattice
• Non-equilibrium restoration of duality symmetry in the vicinity of the superconductor-insulator transition
• Hysteresis and jumps in the I-V curves of disordered two-dimensional materials
• Aspects of Localization across the 2D Superconductor-Insulator Transition
• Cooper Pair Insulator phase induced in amorphous Pb${}_0.9$Bi${}_0.1$ thin films
• Comment on "Magnetic-Field-Tuned Quantum Phase Transition in the Insulating Regime of Ultrathin Amorphous Bi Films"
• Cooper pair islanding model of insulating nanohoneycomb films
• Crossover From Cooper-Pair Hopping to Single-Electron Hopping in Pb${}_x$(TiO${}_2$)${}_{1-x}$ Granular Films
• The effect of Coulomb interactions on the disorder driven superconductor-insulator transition: THz versus tunneling spectroscopy
• Superconductor to Insulator Transition Tuned by Random Gauge Fields