Zobrazeno 1 - 10
of 23
pro vyhledávání: '"E. D. Rippert"'
Autor:
E. D. Rippert, S. Lomatch
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 7:3442-3445
We present the results of numerical simulations of a novel neural networking implementation utilizing multilayered Josephson junction (or series array) based synaptic circuits with local memory. These synaptic circuits utilize single flux quanta for
Autor:
Melville P. Ulmer, E. D. Rippert, John B Ketterson, S. R. Maglic, H. Q. Yang, Christopher D. Thomas, S. N. Song
Publikováno v:
Review of Scientific Instruments. 68:2127-2131
A sputtering deposition system has been developed to grow high-quality superconductor/insulator multilayers specifically for use in fabricating vertically stacked Josephson junctions. A unique feature of the design is the computer control of all para
Autor:
Melville P. Ulmer, Christopher D. Thomas, S.W. Lin, Y.C. Song, C. T. Lin, E. D. Rippert, S. N. Song, John B Ketterson, S. R. Maglic
Publikováno v:
Physics Letters A. 211:172-176
When subjected to microwave radiation, the I - V characteristics of stacked Josephson junctions should exhibit interesting new features which are absent in a single junction. Evidence for collectively phase-locked Shapiro steps and coherent phase-loc
Autor:
S. Lomatch, S. N. Song, Christopher D. Thomas, S. R. Maglic, Melville P. Ulmer, E. D. Rippert, John B Ketterson
Publikováno v:
Applied Superconductivity. 3:567-572
Single and stacked Nb/Al-AlNx/Nb superconducting tunnel junctions with both hysteretic (underdamped) and non-hysteretic (overdamped) current-voltage relationships have been produced utilizing reactively sputtered aluminum nitride tunnel barriers. Sta
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 5:3147-3151
We describe the properties of flux quantum circuitry employing the relatively young technology of multilayer Josephson junctions with n superconductor-insulator (SI) layers. Multilayer junctions can be employed as both passive and active devices to i
Publikováno v:
Physical Review B. 51:12685-12689
Autor:
S. Lomatch, E. D. Rippert
Publikováno v:
Journal of Applied Physics. 76:1711-1719
We present a new type of Josephson transmission line (JTL) in which discrete multilayer Josephson junctions are employed instead of the standard single tri‐layer junction technology. It is shown via numerical simulation that such a structure suppor
Publikováno v:
Journal of Materials Research. 9:1678-1682
A high resolution transmission electron microscopy study of multilayer films prepared by magnetron sputtering shows that the morphology of the growing interface in a-Si/Nb and a-SiN/NbN multilayers is remarkably uniform and smooth; this is in contras
Autor:
Melville P. Ulmer, Christopher D. Thomas, S. Lomatch, M. A. Chieda, Jun Chen, S. R. Maglic, E. D. Rippert, John B Ketterson, S. N. Song
Publikováno v:
Remote Sensing Reviews. 8:227-234
Superconducting tunnel junction X‐ray detectors have potential theoretical energy resolutions on the order of eV's. Such high energy resolutions would be of great use for astrophysical observations in the discrimination of spectral lines in hot pla
Publikováno v:
Journal of Low Temperature Physics. 93:665-670
A superconducting Josephson transmission line (JTL) fabricated with multilayered tunnel junctions with thin (∼100 A) superconducting layers may be used as an ionizing radiation detector. The suppression of the superconducting energy gap in the laye