Disordered Type-II Superconductors: A Universal Phase Diagram for Low-T${}_c$ Systems

Abstract

A universal phase diagram for weakly pinned low-T${}_c$ type-II superconductors is revisited and extended with new proposals. The low-temperature ``Bragg glass'' phase is argued to transform first into a disordered, glassy phase upon heating. This glassy phase, a continuation of the high-field equilibrium vortex glass phase, then melts at higher temperatures into a liquid. This proposal provides an explanation for the anomalies observed in the peak effect regime of 2H-NbSe${}_2$ and several other low-T${}_c$ materials which is independent of the microscopic mechanisms of superconductivity in these systems.

23 pages, 9 figures

References in corpus (20)

• Elastic Theory of pinned flux lattices
• Irreversibility, Mechanical Entanglement and Thermal Melting in Superconducting Vortex Crystals with Point Impurities
• Instabilities and disorder-driven first-order transition of the vortex lattice
• Dynamic instabilities and memory effects in vortex matter
• Metastability and Glassy Behavior of a Driven Flux-Line Lattice
• Topological Defects in the Random-Field XY Model and Randomly Pinned Vortex Lattices
• Topological Defects in the Random-Field XY Model and the Pinned Vortex Lattice to Vortex Glass Transition in Type-II Superconductors
• Abrupt Change of Josephson Plasma Frequency at the Phase Boundary of the Bragg Glass in Bi_2Sr_2CaCu_2O_{8+δ}
• Supercooling of the disordered vortex lattice in Bi_2Sr_2CaCu_2O_8+d
• Plastic Motion of a Flux-line Lattice Driven by Alternating Current
• Anomalous Peak Effect in CeRu2 and NbSe2 : Fracturing of a Flux Line Lattice?
• Flow Induced Organization and Memory of a Vortex Lattice
• The Phase Diagram of Disordered Vortices from London Langevin Simulations
• Peak Effect, Fishtail Effect and Plateau Effect : The Reentrant Amorphization of Vortex Matter in 2H-NbSe_2
• Peak Effect in Superconductors: Melting of Larkin Domains
• Stable and Metastable vortex states and the first order transition across the peak effect region in weakly pinned 2H-NbSe_2
• Amorphization of Vortex Matter and Reentrant Peak Effect in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
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Cited by in corpus (23)

• Peak effect, vortex-lattice melting-line and order - disorder transition in conventional and high-T superconductors
• Phase Behavior of Type-II Superconductors with Quenched Point Pinning Disorder: A Phenomenological Proposal
• Two-step melting of the vortex solid in layered superconductors with random columnar pins
• Driven Disordered Polymorphic Solids: Phases and Phase Transitions, Dynamical Coexistence and Peak Effect Anomalies
• Real-space vortex glass imaging and the vortex phase diagram of SnMo6S8
• Relaxation and Glassy Dynamics in Disordered Type-II Superconductors
• Exploring metastability via the third harmonic measurements in single crystals of $2H$-$NbS{e}_2$ showing anomalous Peak effect
• Relaxation dynamics in type-II superconductors with point-like and correlated disorder
• Flux jumps, Second Magnetization Peak anomaly and the Peak Effect phenomenon in single crystals of $YN{i}_2{B}_{2}C$ and $LuN{i}_2{B}_{2}C$
• Melting and structure of the vortex solid in strongly anisotropic layered superconductors with random columnar pins
• Crossover from paramagnetic compressed flux regime to diamagnetic pinned vortex lattice in a single crystal of cubic Ca(3)Rh(4)Sn(13)
• Evolution in the split-peak structure across the Peak Effect region in single crystals of $2H$-NbSe${}_2$
• Dual role of an ac driving force and the underlying two distinct order-disorder transitions in the vortex phase diagram of Ca3Ir4Sn13
• Vortex Phase Diagram of Layered Superconductor Cu0.03TaS2 for H || c
• Phase diagram of vortex matter in layered superconductors with random point pinning
• Suppression of the Melting Line in a Weakly Disordered Flux-line System
• Phase diagram of randomly pinned vortex matter in layered superconductors: dependence on the details of the point pinning
• Anomalous peak effect in iron-based superconductors Ba${}_{1-x}$K${}_x$Fe${}_2$As${}_2$ ($x\approx$ 0.69 and 0.76) for magnetic-field directions close to the $ab$ plane and its possible relation to the spin paramagnetic effect
• Effect of pinning and driving force on the metastability effects in weakly pinned superconductors and the determination of spinodal line pertaining to order-disorder transition
• Unified Phase Diagram for the Three-Dimensional XY Model of a Point Disordered Type-II Superconductor
• Quenched metastable vortex states in Sr2RuO4
• Anisotropy in spatial order-disorder transformations and the vortex lattice symmetry transition in $YN{i}_2{B}_{2}C$ and $LuN{i}_2{B}_{2}C$
• Doping Dependence of Vortex Regimes in Y${}_{1-x}$Pr${}_x$Ba${}_2$Cu${}_3$O${}_{7-\delta }$ Single Crystals