Zobrazeno 1 - 4
of 4
pro vyhledávání: '"P. J. M. Wöltgens"'
Autor:
R. H. Koch, P. J. M. Wöltgens
Publikováno v:
Review of Scientific Instruments. 71:1529-1533
Measurements of the magnetic field noise and the spatial correlation of the noise were made in a typical laboratory environment using two three-axis fluxgate magnetometers. The magnitude of the magnetic field noise was found to be approximately 100 p
Autor:
W. J. Goss, D.K. Lathrop, T. Picunko, D. Gambrel, P. J. M. Wöltgens, D. Overway, R. Wiegert, R. H. Koch, J. R. Rozen
Publikováno v:
Review of Scientific Instruments. 67:2968-2976
A dc superconducting quantum interference device (SQUID) modulation and feedback circuit operating at a modulation frequency of 16 MHz has been constructed. Using a novel wide band superconducting thin film transformer to impedance match the SQUID to
Publikováno v:
Physica C: Superconductivity 247(1&2), 67-73. (1995)
The voltage noise of YBa2Cu3O7−δ films is measured in the resistive vortex-liquid phase which occurs above the vortex-glass transition in high magnetic fields. The excess voltage-noise spectral density SV is found to vanish critically at the vorte
Publikováno v:
Physical Review Letters. 71:3858-3861
The Hall electric field E y is observed to be a strongly nonlinear function of the current density J x in the vicinity of the vortex-glass transition of YBa 2 Cu 3 O 7-δ films in a magnetic field. Much like the longitudinal electric field E x , E y