High-resolution dichroic imaging of magnetic flux distributions in superconductors with scanning x-ray microscopy
- MPI for Intelligent Systems, Heisenbergstr. 3, D-70569 Stuttgart (Germany)
- Research Institute for Innovative Surfaces, FINO, Aalen University, Beethovenstr. 1, D-73430 Aalen (Germany)
The penetration of magnetic flux into high-temperature superconductors has been observed using a high-resolution technique based on x-ray magnetic circular dichroism. Superconductors coated with thin soft-magnetic layers are observed in a scanning x-ray microscope under the influence of external magnetic fields. Resulting electric currents in the superconductor create an inhomogeneous magnetic field distribution above the superconductor and lead to a local reorientation of the ferromagnetic layer. Measuring the local magnetization of the ferromagnet by x-ray absorption microscopy with circular-polarized radiation allows the analysis of the magnetic flux distribution in the superconductor with a spatial resolution on the nanoscale.
- OSTI ID:
- 22399117
- Journal Information:
- Applied Physics Letters, Vol. 106, Issue 2; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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