Abstract
A Scanning SQUID Microscope (SSM), developed by using our own Nb–AlOx–Nb technology, is used to study the distribution of vortices in a superconducting thin film and their movements induced by applied current. The SQUID sensor is a first-order gradiometer with an overall equivalent flux noise of about 5×10-6Φ0Hz-1/2. Using this SSM system, we obtain the vortex images before and after a pulse current with a variable amplitude and duration time is applied to the sample. The changes of a series of vortex images with increasing amplitude of the current pulse provide us with an estimate of the vortex pinning force at various pinning sites and their distribution.
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.
