J. Phys. IV France
Volume 09, Numéro PR10, December 1999
International Workshop on Electronic Crystals
Page(s) Pr10-301 - Pr10-303
International Workshop on Electronic Crystals

J. Phys. IV France 09 (1999) Pr10-301-Pr10-303

DOI: 10.1051/jp4:19991079

Out-of-plane superfluid density of a layered organic superconductor : The coherent Josephson tunneling

S. Tomic1, M. Pinteric1, 2, K. Maki3, M. Prester1, Ð. Drobac1, O. Milat1, D. Schweitzer4, I. Heinen5 and W. Strunz5

1  Institute of Physics, Zagreb, Croatia
2  Faculty of Civil Engineering, University of Maribor, Maribor, Slovenia
3  Department of Physics and Astronomy, USC, Los Angeles, U.S.A.
4  3. Physikalisches Institut, Universität Stuttgart, Stuttgart, Germany
5  Anorganisch-Chemiches Institut, Universität Heidelberg, Heidelberg, Germany

Measurements of AC magnetic susceptibility in k-(BEDT-TTF)2Cu[N(CN)2Br] show that the b-axis penetration depth below Tc exhibits behaviour different from that observed in the ac plane, which exhibits the T-linear dependence. In agreement with earlier measurements, a leading quadratic temperature dependence is found at low temperatures. The temperature dependence of the out-of plane superfluid density is shown to best agree with a model of d-wave superconducting layers coupled by coherent Josephson tunneling.

© EDP Sciences 1999