Second magnetization peak in flux lattices: the decoupling scenario

Abstract

The second peak phenomena of flux lattices in layered superconductors is described in terms of a disorder induced layer decoupling transition. For weak disorder the tilt mudulus undergoes an apparent discontinuity which leads to an enhanced critical current and reduced domain size in the decoupled phase. The Josephson plasma frequency is reduced by decoupling and by Josephson glass pinning; in the liquid phase it varies as 1/[BT(T+T_0)] where T is temperature, B is field and T_0 is the disorder dependent temperature of the multicritical point.

5 pages, 1 eps figure, Revtex. Minor changes, new references

References in corpus (5)

• Possible new vortex matter phases in BSCCO
• Where does the transport current flow in Bi2Sr2CaCu2O8 crystals?
• The Phase Diagram of Disordered Vortices from London Langevin Simulations
• Josephson glass and decoupling of flux lattices in layered superconductors
• Anharmonicity of flux lattices and thermal fluctuations in layered superconductors

Cited by in corpus (10)

• Abrupt Change of Josephson Plasma Frequency at the Phase Boundary of the Bragg Glass in Bi_2Sr_2CaCu_2O_{8+δ}
• Vortex Softening: Origin of the second peak effect in Bi${}_2$Sr${}_2$CaCu${}_2$O${}_{8+\delta }$
• Vortices Clustering: The Origin of the Second Peak in the Magnetisation Loops of High Temperature Superconductors
• Disorder Induced Transitions in Layered Coulomb Gases and Superconductors
• Vortex Lattice Depinning vs. Vortex Lattice Melting: a pinning-based explanation of the equilibrium magnetization jump
• Decoupling and Depinning II: Flux lattices in disordered layered superconductors
• Disorder induced transitions in layered Coulomb gases and application to flux lattices in superconductors
• Decoupling Transition I. Flux Lattices in Pure Layered Superconductors
• Josephson-plasma and vortex modes in layered superconductors
• Decoupling and decommensuration in layered superconductors with columnar defects