Slow relaxations and history dependence of the transport properties of layered superconductors

Raphaël Exartier; Leticia F. Cugliandolo

doi:10.1103/PhysRevB.66.012517

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Slow relaxations and history dependence of the transport properties of layered superconductors

Raphaël Exartier, Leticia F. Cugliandolo

DOI 10.1103/PhysRevB.66.012517 · Physical Review B

T1

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Abstract

We study numerically the time evolution of the transport properties of layered superconductors after different preparations. We show that, in accordance with recent experiments in Bi2Sr2CaCu2O8 performed in the second peak region of the phase diagram (Portier et al.), the relaxation strongly depends on the initial conditions and is extremely slow. We investigate the dependence on the pinning center density and the perturbation applied. We compare the measurements to recent findings in tapped granular matter and we interpret our results with a rather simple picture.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown