Document Type

Article

Date

5-19-1994

Embargo Period

10-21-2011

Keywords

Fluctuations, condensed matter physics

Language

English

Disciplines

Physics

Description/Abstract

We use a hydrodynamics theory to discuss the response of a viscous flux-line liquid to an ac perturbation applied at the surface of the sample. The theory incorporates viscoelastic effects and describes the crossover between liquid-like and solid-like response of the vortex array as the frequency of the perturbation increases. A large viscosity from flux-line interactions and entanglement leads to viscous screening of surface fields. As a result, two frequency-dependent length scales are needed to describe the penetration of an ac field. For large viscosities the imaginary part of the ac permeability can exihibit, in addition to the well-know peak associated with flux diffusion across the sample, a new low-frequency peak corresponding to the transition from solid-like to liquid-like behavior.

Additional Information

This manuscript is from arXiv.org, for more information see http://arxiv.org/abs/cond-mat/9405051

Source

harvested from arXiv.org

Included in

Physics Commons

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