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

作者：Pimenov A^*; Loidl A; Schey B; Stritzker B; Jakob G; Adrian H; Pronin **; Goncharov YG

来源：EPL, 1999, 48(1): 73-78.

DOI：10.1209/epl/i1999-00116-1

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 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.

• 出版日期1999-10-1