Abstract
At low magnetic fields the intermediate-state structure of type I superconducting films can consist of multiquantum flux tubes arranged in an ordered or disordered configuration. We have studied the number of flux tubes in small, rectangular, lead films of 6–8 µm thickness as a function of the magnetic field applied perpendicular to the films, using a high-resolution magnetooptical method. In order to facilitate the establishment of the equilibrium flux distribution and to minimize the influence of the Gibbs free energy barrier against magnetic flux penetration, the specimens were cooled at constant field from aboveT c to 4.2 K. From the results the average flux tube diameter was calculated using flux conservation. The flux tube diameter was found to be larger by a factor of 2–3 than the value expected from the Goren-Tinkham model.
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.
