Magnetic x-ray microscopy at low temperatures – Visualization of flux distributions in superconductors
- Max Planck Institute for Intelligent Systems, Heisenbergstraße 3, 70569 Stuttgart (Germany)
- Research Institute for Innovative Surfaces, FINO, Aalen University, Beethovenstraße 1, 73430 Aalen (Germany)
X-ray Magnetic Circular Dichroism (XMCD) microscopy at liquid nitrogen temperature has been performed on bilayers of high-T{sub c} superconducting YBCO (YBa{sub 2}Cu{sub 3}O{sub 7-δ}) and soft-magnetic Co{sub 40}Fe{sub 40}B{sub 20}. This should allow us to map the magnetic flux density distribution in the current-carrying state of the superconductor with high spatial resolution. For that purpose the UHV scanning X-ray microscope MAXYMUS has been upgraded by a MMR Micro Miniature Joule-Thompson cryostat capable of temperatures between 75 K and 580 K. Resulting XMCD images of the magnetic flux density in the superconductor with a field of view ranging from millimeters to micrometers are presented. The microscope’s unique combination of total electron yield (TEY) measurements together with low temperatures offers novel possibilities concerning the current transport in superconductors on small length scales.
- OSTI ID:
- 22494395
- Journal Information:
- AIP Conference Proceedings, Vol. 1696, Issue 1; Conference: XRM 2014: 12. international conference on X-ray microscopy, Melbourne (Australia), 26-31 Oct 2014; Other Information: (c) 2016 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BARIUM OXIDES
COPPER OXIDES
CRYOSTATS
DISTRIBUTION
ELECTRONS
FLUX DENSITY
HIGH-TC SUPERCONDUCTORS
IMAGES
LIQUEFIED GASES
MAGNETIC CIRCULAR DICHROISM
MAGNETIC FLUX
MICROSCOPES
MICROSCOPY
NITROGEN
SPATIAL RESOLUTION
TEMPERATURE RANGE 0065-0273 K
X RADIATION
YTTRIUM OXIDES