High field termination of a Cooper-pair insulator

Abstract

We conducted a systematic study of the disorder dependence of the termination of superconductivity, at high magnetic fields (B), of amorphous indium oxide films. Our lower disorder films show conventional behavior where superconductivity is terminated with a transition to a metallic state at a well-defined critical field, Bc2. Our higher disorder samples undergo a B-induced transition into a strongly insulating state, which terminates at higher B's forming an insulating peak. We demonstrate that the B terminating this peak coincides with Bc2 of the lower disorder samples. Additionally we show that, beyond this field, these samples enter a different insulating state in which the magnetic field dependence of the resistance is weak. These results provide crucial evidence for the importance of Cooper-pairing in the insulating peak regime.

arXiv comment5 pages, 3 figures, minor changes

References in corpus (27)

• Localization of preformed Cooper-pairs in disordered superconductors
• Nature of the superconductor-insulator transition in disordered superconductors
• Disorder-Induced Inhomogeneities of the Superconducting State Close to the Superconductor-Insulator Transition
• Fractal superconductivity near localization threshold
• Superconductivity-Related Insulating Behavior
• Localized Superconductivity in the Quantum-Critical Region of the Disorder-Driven Superconductor-Insulator Transition in TiN Thin Films
• Single and two-particle energy gaps across the disorder-driven superconductor-insulator transition
• Phase fluctuations in a strongly disordered s-wave superconductor close to the metal-insulator transition
• Pseudogap in a thin film of a conventional superconductor
• Phase diagram of a strongly disordered s-wave superconductor, NbN, close to the metal-insulator transition
• Experimental evidence for a collective insulating state in two-dimensional superconductors
• Electrical Control of the Superconducting-to-Insulating Transition in Graphene/Metal Hybrids
• Disorder and Quantum Fluctuations in Superconducting Films in Strong Magnetic Fields
• The approach to a superconductor-to-Bose-insulator transition in disordered films
• Influence of high magnetic fields on superconducting transition of one-dimensional Nb and MoGe nanowires
• Superconductivity in the insulating phase above the field-tuned superconductor-insulator transition in disordered indium oxide films
• Superconductor-Insulator transition and energy localization
• Quantum Metallicity on the High-Field Side of the Superconductor-Insulator Transition
• Emergence of nanoscale inhomogeneity in the superconducting state of a homogeneously disordered conventional superconductor, NbN
• Vortices and quasiparticles near the "superconductor-insulator" transition in thin films
• Destruction of localized electron pairs above the magnetic-field-driven superconductor-insulator transition in amorphous InO films
• Fluctuations, dissipation, and nonuniversal superfluid jumps in two-dimensional superconductors
• Observation of Giant Positive Magnetoresistance in a Cooper Pair Insulator
• Survival of superconducting correlations across the 2D superconductor-insulator transition: A finite frequency study
• Theory of Magneto-resistance of Disordered Superconducting Films
• Purely electronic transport and localization in the Bose glass
• Cooper pairs under the action of disorder and strong magnetic field

Cited by in corpus (21)

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• Collective energy gap of preformed Cooper-pairs in disordered superconductors
• Superconductor-Insulator Transition in disordered Josephson junction chains
• Quantum meets classical phase transition: Low-temperature anomaly in disordered superconductors near $B_{c2}$
• Tunable sub-gap radiation detection with superconducting resonators
• Particle-vortex symmetric liquid
• Superconductor-insulator transitions in three-dimensional indium-oxide at high pressures
• Excessive Noise as a Test for Many-Body Localization
• Thermal relaxation in metal films limited by diffuson lattice excitations of amorphous substrates
• Near-power-law temperature dependence of the superfluid stiffness in strongly disordered superconductors
• Vortex excitations in the Insulating State of an Oxide Interface
• Ultrasonic attenuation in a pseudogapped superconductor
• New paradigm for a disordered superconductor in a magnetic field
• Instability of insulators near quantum phase transitions
• The Critical Current of Disordered Superconductors near T=0
• Low-energy dynamical response of an Anderson insulator with local attraction
• The Temperature dependence of the magneto-resistance peak in highly disordered superconductors
• Non-equilibrium restoration of duality symmetry in the vicinity of the superconductor-insulator transition
• Direct observation of intrinsic surface magnetic disorder in amorphous superconducting films
• Single-gap two-band superconductivity well above the Pauli limit in non-centrosymmetric TaIr${}_2$B${}_2$
• Local insulator-to-superconductor transition in amorphous InO${}_x$ films modulated by e-beam irradiation