Universal relationship between the penetration depth and the normal-state conductivity in YBaCuO

Abstract

The absolute values of the conductivity in the normal state sigma_n and of the low temperature penetration depths lambda(0) were measured for a number of different samples of the YBaCuO family. We found a striking correlation between sigma_n and 1/lambda^2, regardless of doping, oxygen reduction or defects, thus providing a simple method to predict the superconducting penetration depth and to have an estimate of the sample quality by measuring the normal-state conductivity.

7 pages, 1 figure, Europhys. Lett., accepted

References in corpus (3)

• d-Wave Model for Microwave Response of High-Tc Superconductors
• Linear Temperature Variation of the Penetration Depth in YBCO Thin Films
• Penetration depth and conductivity of NbN and DyBa_2Cu_3O_7 thin films measured by mm-wave transmission

Cited by in corpus (6)

• Universal scaling relation in high-temperature superconductors
• Scaling of the superfluid density in high-temperature superconductors
• Frequency dependent relaxation rate in the superconducting YBa2Cu3O{6+delta}
• Universal scaling relations in electron-phonon superconductors
• Universal scaling and pairing symmetry for high-temperature cuprate superconductors
• Enhanced superconducting correlations in the Emery model and its connections to strange metallic transport and normal state coherence