Intermediate State in Type-I Superconducting Strip with Current

ORAL

Abstract

The dynamic structure of the intermediate state was studied in pinning-free Pb strips using real-time magneto-optical visualization. It is found that topological hysteresis can be lifted by applying sufficiently large current. Namely, laminar structure that appears on flux exit in a static case is turned into tubular when the current is present. Temperature, magnetic field and current phase diagram is discussed.

*Supported by the DOE-BES contract No. DE-AC02-07CH11358, NSF grant No. DMR-05-53285 and Alfred P. Sloan Foundation.

–

Authors

  • Jacob Hoberg

    • Iowa State University

  • Ruslan Prozorov

    • Iowa State University, Dept of Physics \& Astronomy and Ames Laboratory
    • Ames Laboratory, Ames, IA 50011
    • Ames Laboratory
    • Iowa State University