Vortex phase transformations probed by the local ac response of Bi_{2}Sr_{2}CaCu_{2}O_{8+δ} single crystals with various doping

Abstract

The linear ac response of the vortex system is measured locally in Bi-2212 single crystals at various doping, using a miniature two-coil mutual-inductance technique. It was found that a step-like change in the local ac response takes place exactly at the first-order transition (FOT) temperature T_{FOT}(H) determined by a global dc magnetization measurement. The T_{FOT}(H) line in the H-T phase diagram becomes steeper with increasing doping. In the higher-field region where the FOT is not observed, the local ac response still shows a broadened but distinct feature, which can be interpreted to mark the growth of a short-range order in the vortex system.

4 pages, including 5 eps figures

References in corpus (4)

• Possible new vortex matter phases in BSCCO
• Where does the transport current flow in Bi2Sr2CaCu2O8 crystals?
• Transport properties of BSCCO crystals with and without surface barriers
• Josephson glass and decoupling of flux lattices in layered superconductors

Cited by in corpus (3)

• Transport Properties of Vortex Matter Governed by the Edge Inductance of Superconducting Bi${}_2$Sr${}_2$CaCu${}_2$O${}_8$ Single Crystals
• Monte Carlo Simulation of the Crossover from Bose Glass to Bragg Glass Phase in Layered BSCCO with Columnar Defects
• Second ac screening step as a probe for the first-order melting transition in layered vortex matter at intermediate temperatures