Abstract
The AC susceptibility (χ′, χ″) has been measured in a single crystal of the organic superconductor κ-(ET) 2Cu(NCS) 2 (T c = 9.5 K) as a function of the DC magnetic field, for several frequensies (10 2 Hz <f<10 4 Hz) and different AC fields (1 μT <h ac <300 μT) at fixed temperatures. Nonlinear AC response appears above 10 μT. We have studied this nonlinear regime and obtained the magnetic field and frequency dependence of the critical current density with a critical state model. J c shows an exponential decrease as a function of the magnetic field and increases with increasing frequency. This results may be understood in terms of the collective pinning theory.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
