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Physical Review Letters
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Observation of critical scaling behavior in the ac impedance at the onset of superconductivity in a large magnetic field

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Abstract

We have measured the ac impedance of Y-Ba-Cu-O thin films in a magnetic field of 0.55 T and in the frequency range from 100 kHz to 500 MHz. At the temperature of the dc vortex-glass transition but in the ac linear regime, we find scaling behavior of the impedance amplitude.

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Physical Review Letters

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