Physics – Condensed Matter – Superconductivity
Scientific paper
2004-06-08
Physics
Condensed Matter
Superconductivity
submitted to PRL
Scientific paper
10.1103/PhysRevLett.95.097004
We present direct imaging of magnetic flux structures in the anisotropic, spin-triplet superconductor Sr$_{2}$RuO$_{4}$ using a scanning $\mu$SQUID microscope. Individual quantized vortices were seen at low magnetic fields. Coalescing vortices forming flux domains were revealed at intermediate fields. Based on our observations we suggest that a mechanism intrinsic to the material stabilizes the flux domains against the repulsive vortex-vortex interaction. Topological defects like domain walls can provide this, implying proof for unconventional chiral superconductivity.
Dolocan Voicu O.
Hasselbach Klaus
Lejay Pascal
Liu Ya-Ying
Mailly Dominique
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