Engineering topics
Publications and source records attributed to Vasquez, R..
The pairing symmetry and the superconducting gap in high-temperature superconducting cuprates are investigated as a function of the hole doping level (x) and temperature (T), using directional scanning tunneling spectroscopy (STS).
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The vortex-state complex Hall conductivity (o(sub xy)) of superconducting YBa(sub 2)Cu(sub 3)O(sub 7) epitaxial films is investigated from DC to radio frequencies (up to 7 x 10(sup 6) Hz), using a direct transport measurement technique.
Epitaxial thin films of the TI cuprate superconductors are studied with x-ray photoemission spectroscopy.
The variation of E(sub f) with oxygen stoichiometry is detectable in rigid shifts of the photoemission core levels, as previously reported for TI-2201 and TI-1212.
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A low-noise microwave receiver downconverter utilizing thin-film high-critical-temperature superconducting (HTS) passive circuitry and semiconductor active devices has been developed for use in space.
High frequency detector and circuit applications often require device fabrication on medium-to-low-dielectric constant substrates.
High-quality superconductor/normal-metal/superconductor(SNS) edge-geometry weak links have been produced on silicon-on-sapphire (SOS) substrates using a new SrTiO(sub 3)/'seed layer'/cubic-zirconia (YS2) buffer system.