Phys. Rev. Lett. 74, 1847–1850 (1995)Observation of Single Vortices Condensed into a Vortex-Glass Phase by Magnetic Force MicroscopyReceived 21 April 1994; published in the issue dated 6 March 1995 A low temperature magnetic force microscope has been applied to spatially resolve single vortices in an epitaxially grown YBa2Cu3 O7-δ thin film at 77 K. A disordered vortex arrangement is observed, and the vortices are strongly pinned. The observed phase is expected to be truly superconducting due to strong pinning. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.74.1847
DOI:
10.1103/PhysRevLett.74.1847
PACS:
74.60.Ge, 61.16.Ch, 74.76.Bz
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