Particle-hole symmetry reveals failed superconductivity in the metallic phase of two-dimensional superconducting films

Abstract

Electrons confined to two dimensions display an unexpected diversity of behaviors as they are cooled to absolute zero. Noninteracting electrons are predicted to eventually "localize" into an insulating ground state, and it has long been supposed that electron correlations stabilize only one other phase: superconductivity. However, many two-dimensional (2D) superconducting materials have shown surprising evidence for metallic behavior, where the electrical resistivity saturates in the zero-temperature limit, the nature of this unexpected metallic state remains under intense scrutiny. We report electrical transport properties for two disordered 2D superconductors, indium oxide and tantalum nitride, and observe a magnetic field-tuned transition from a true superconductor to a metallic phase with saturated resistivity. This metallic phase is characterized by a vanishing Hall resistivity, suggesting that it retains particle-hole symmetry from the disrupted superconducting state.

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Cited by in corpus (47)

• Anomalous metals -- failed superconductors
• Quantum coherence across bosonic superconductor-anomalous metal-insulator transitions
• Extreme Sensitivity of the Superconducting State in Thin Films
• A strange metal in a bosonic system
• Coexistence of resistance oscillations and the anomalous metal phase in a lithium intercalated TiSe${}_2$ superconductor
• Extrinsic and Intrinsic Anomalous Metallic States in Transition Metal Dichalcogenide Ising Superconductors
• Quantum and classical ratchet motions of vortices in a 2D trigonal superconductor
• Quantum phase transitions in two-dimensional superconductors: a review on recent experimental progress
• Enhanced, phase coherent, multifractal-like, two-dimensional superconductivity
• Bosonic topological insulator intermediate state in the superconductor-insulator transition
• Anomalous quantum Griffiths singularity in ultrathin crystalline lead films
• Anomalous quantum metal in a 2D crystalline superconductor with intrinsic electronic non-uniformity
• Tuning from failed superconductor to failed insulator with magnetic field
• Superconductor to weak-insulator transitions in disordered Tantalum Nitride films
• Anomalous metals: from "failed superconductor" to "failed insulator"
• Universal behavior of the bosonic metallic ground state in a two-dimensional superconductor
• Absence of cyclotron resonance in the anomalous metallic phase in InO${}_x$
• Bose Metal as a Disruption of the Berezinskii-Kosterlitz-Thouless Transition in 2D Superconductors
• High-Temperature Anomalous Metal States in Iron-Based Interface Superconductors
• Collusion of Interactions and Disorder at the Superfluid-Insulator Transition: A Dirty 2d Quantum Critical Point
• Free at Last: Bose Metal Uncaged
• Robust anomalous metallic states and vestiges of self duality in two-dimensional granular In-InOx composites
• Vortex dynamics in the two-dimensional BCS-BEC crossover
• Magnetic field reveals vanishing Hall response in the normal state of stripe-ordered cuprates
• Two-Dimensional Superconductivity at the Titanium Sesquioxide Heterointerface
• Two-dimensional conductors with interactions and disorder from particle-vortex duality
• Theory of the supercyclotron resonance and Hall response in anomalous 2d metals
• Strange metal from incoherent bosons
• Unveiling resilient superconducting fluctuations in atomically thin NbSe${}_2$ through Higgs mode spectroscopy
• Structural dynamics in thermal-treatment of amorphous indium-oxide films
• Origin of Topological Order in a Cooper Pair Insulator
• How magnetic field can transform a superconductor into a Bose metal
• Effect of magnetization on the tunneling anomaly in compressible quantum Hall states
• Disorder and magnetic field induced Bose-metal state in two-dimensional Ta${}_x$(SiO${}_2$)${}_{1-x}$ granular films
• Excess noise in the anomalous metallic phase in amorphous indium oxide
• Vanishing Hall Conductance in the Phase Glass Bose Metal at Zero Temperature
• Granular-composite-like electrical transport properties of polycrystalline cubic TaN${}_x$ thin films prepared by rf sputtering method
• Gapless superconductivity in the low-frequency electrodynamic response of two-dimensional granular In/InO${}_x$ composites
• Voltage-tuned anomalous-metal to metal transition in hybrid Josephson junction arrays
• Superconducting phase transitions in disordered NbTiN films
• Unique quantum metallic state in the titanium sesquioxide heterointerface superconductor
• Persistence of vortexlike phase fluctuations in underdoped to heavily overdoped Bi-2201 cuprates
• Superconducting gap and its Little-Parks like oscillations with high-order harmonics in lithium intercalated 1T-TiSe${}_2$
• Crossover From Cooper-Pair Hopping to Single-Electron Hopping in Pb${}_x$(TiO${}_2$)${}_{1-x}$ Granular Films
• Zero temperature superconductor - edge metal - insulator transition in $2D$ bosonic systems
• Dual Universality and Unconventional Phase Diagram of a Clean 2D Superconductor with Tunable Disorders
• Superfluid response of two-dimensional filamentary superconductors