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Flux-lattice melting in amorphous composite In/InO/sub x/ two-dimensional superconductors

Journal Article · · Phys. Rev. Lett.; (United States)
We report the phase diagram for magnetic fluxoids in two-dimensional In/InO/sub x/ superconducting films. The films are sputtered directly onto high-Q silicon oscillators. The melting of the vortex lattice is signaled by a peak in the attenuation and a shift of the resonant frequency of the oscillator, caused by the rapid change in mobility of the vortex array. The zero-field limit of the melting temperature can be fitted by the Kosterlitz-Thouless model. However, the magnetic field dependences disagree with the current theoretical picture.
Research Organization:
ATandT Bell Laboratories, Murray Hill, New Jersey 07974
OSTI ID:
5618134
Journal Information:
Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 60:2; ISSN PRLTA
Country of Publication:
United States
Language:
English