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Measurements of the absolute value of the penetration depth in high-$ T_c$ superconductors using a tunnel diode resonator

R. Prozorov·R. W. Giannetta·A. Carrington·P. Fournier·R. L. Greene·D. G. Hinks·A. R. Banks
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Abstract

A method is presented to measure the absolute value of the London penetration depth, $λ$, from the frequency shift of a resonator. The technique involves coating a high-$T_c$ superconductor (HTSC) with film of low - Tc material of known thickness and penetration depth. The method is applied to measure London penetration depth in YBa2Cu3O{7-δ} (YBCO) Bi2Sr2CaCu2O{8+δ} (BSCCO) and Pr{1.85}Ce{0.15}CuO{4-δ}$ (PCCO). For YBCO and BSCCO, the values of $λ(0)$ are in agreement with the literature values. For PCCO $λ\approx 2790$ Å, reported for the first time.

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R. Prozorov, R. W. Giannetta, A. Carrington, P. Fournier, R. L. Greene, D. G. Hinks, A. R. Banks. 2000-07-02. Measurements of the absolute value of the penetration depth in high-$ T_c$ superconductors using a tunnel diode resonator. https://doi.org/10.1063/1.1328362

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