Quantum Metallicity on the High-Field Side of the Superconductor-Insulator Transition
arXiv:cond-mat/0602557 · doi:10.1103/PhysRevLett.98.127003
Abstract
We investigate ultrathin superconducting TiN films, which are very close to the localization threshold. Perpendicular magnetic field drives the films from the superconducting to an insulating state, with very high resistance. Further increase of the magnetic field leads to an exponential decay of the resistance towards a finite value. In the limit of low temperatures, the saturation value can be very accurately extrapolated to the universal quantum resistance h/e^2. Our analysis suggests that at high magnetic fields a new ground state, distinct from the normal metallic state occurring above the superconducting transition temperature, is formed. A comparison with other studies on different materials indicates that the quantum metallic phase following the magnetic-field-induced insulating phase is a generic property of systems close to the disorder-driven superconductor-insulator transition.
4 pages, 4 figures, published version
References in corpus (1)
Cited by in corpus (21)
- Electrodynamics of Correlated Electron Materials
- Localization of preformed Cooper-pairs in disordered superconductors
- Disorder-Induced Inhomogeneities of the Superconducting State Close to the Superconductor-Insulator Transition
- Localized Superconductivity in the Quantum-Critical Region of the Disorder-Driven Superconductor-Insulator Transition in TiN Thin Films
- Quantum breakdown of superconductivity in low-dimensional materials
- High field termination of a Cooper-pair insulator
- Hyperactivated resistance in TiN films on the insulating side of the disorder-driven superconductor-insulator transition
- Evidence of Spatially Inhomogeous Pairing on the Insulating Side of a Disorder-Tuned Superconductor-Insulator Transition
- Localization and Superconductivity in Doped Semiconductors
- Robust anomalous metallic states and vestiges of self duality in two-dimensional granular In-InOx composites
- Compensation driven superconductor-insulator transition
- Instanton Glass Generated by Noise in a Josephson-Junction Array
- Signature of Cooper Pairs in the Non-Superconducting Phases of Amorphous Superconducting Tantalum Films
- New paradigm for a disordered superconductor in a magnetic field
- Superconductor-insulator transition in Coulomb disorder
- Insulator-pseudogap crossover in the Lieb lattice
- Superconducting islands, phase fluctuations and the superconductor-insulator transition
- Field-Induced Boson Insulating States in a 2D Superconducting Electron Gas with Strong Spin-Orbit Scatterings
- Highly tunable NbTiN Josephson junctions fabricated with focused helium ion beam
- Subgap two-particle spectral weight in disordered -wave superconductors: Insights from mode coupling approach
- Proximitized insulators from disordered superconductors