Flux Lattice Melting and Lowest Landau Level Fluctuations

Abstract

We discuss the influence of lowest Landau level (LLL) fluctuations near H_{c2}(T) on flux lattice melting in YBa${}_2$Cu${}_3$O${}_{7-\delta }$ (YBCO). We show that the specific heat step of the flux lattice melting transition in YBCO single crystals can be attributed largely to the degrees of freedom associated with LLL fluctuations. These degrees of freedom have already been shown to account for most of the latent heat. We also show that these results are a consequence of the correspondence between flux lattice melting and the onset of LLL fluctuations.

4 pages, 2 embedded figures

References in corpus (3)

• Fermionic entropy of the vortex state in d-wave superconductors
• Universal Phase Diagram for Vortex States of Layered Superconductors in Strong Magnetic Fields
• 3D Lowest Landau Level Theory Applied to YBCO Magnetization and Specific Heat Data: Implications for the Critical Behavior in the H-T Plane

Cited by in corpus (8)

• The Ginzburg-Landau Theory of Type II superconductors in magnetic field
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• Thermal fluctuations correction to magnetization and specific heat of vortex solids in type II superconductors
• Precision calculation of magnetization and specific heat of vortex liquids and solids in type II superconductors
• Supercooled vortex liquid and quantitative theory of melting of the flux line lattice in type II superconductors
• Hall Anomaly and Vortex-Lattice Melting in Superconducting Single Crystal YBa2Cu3O7-d
• Thermodynamic Observation of a Vortex Melting Transition in the Fe-based Superconductor Ba0.5K0.5Fe2As2
• Numerical studies of the phase diagram of layered type II superconductors in a magnetic field