Abstract
Magnetic-relaxation experiments were performed on Bi[sub 2]Sr[sub 2]CaCu[sub 2]O[sub [ital x]] single crystals with the direction of the field parallel to the [ital ab] plane. Based on the relaxation data, we have obtained relationships between the activation energy [ital U] and the current density [ital j] by an approach we developed previously. We found that the activation energy has a logarithmic dependence on [ital j] in a wide regime of driving force. It has been reported that CuO[sub 2] planes in high-[ital T][sub [ital c]] superconductors can act as strong intrinsic pinning centers and that the relation [ital U][similar to][ital U][sub 0]ln([ital j][sub [ital c]]/[ital j]) may describe such a pinning mechanism. Our experimental results have shown good agreement with such a physical model of intrinsic flux pinning.
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.
