Author/Authors :
Tsubokura، نويسنده , , Y. and Miyamoto، نويسنده , , M. and Ikeda، نويسنده , , K. and Nakamura، نويسنده , , T. and Takahashi، نويسنده , , T.، نويسنده ,
Abstract :
To determine the symmetry of the superconducting energy gap, we measured the ac-susceptibility of κ-(BEDT-TTF)2Cu(NCS)2. With shielding geomagnetic field, we confirmed the power law temperature dependence of magnetic-field penetration depth. This result indicates an anisotropic superconductivity of gapless nature in this system. The penetration depth extrapolated to 0K for parallel field was found to be ∼0.22mm of macroscopic size.
