Zobrazeno 1 - 10
of 102
pro vyhledávání: '"E.A. Stepantsov"'
Publikováno v:
Physica C: Superconductivity. :347-350
YBCO integrated structures consisting of a planar antenna and a Josephson junction were designed and fabricated on bicrystal sapphire substrates. By combining two such structures in an oscillator-receiver arrangement a submillimeter-wavelength tester
Autor:
Tord Claeson, M. A. Tarasov, A. Kalabukhov, E.A. Stepantsov, Tobias Lindström, Zdravko Ivanov
Publikováno v:
Physica C: Superconductivity. :76-79
Submicron YBCO bicrystal Josephson junctions (JJ) and devices for high frequency applications were designed, fabricated and experimentally studied. The key elements of these devices are bicrystal sapphire substrates with symmetric misorientation angl
Autor:
Tord Claeson, Alexey Kalabukhov, E.A. Stepantsov, Zdravko Ivanov, M. A. Tarasov, Tobias Lindström
Publikováno v:
Physica C: Superconductivity. :355-359
A novel approach to synchronization of arrays of Josephson junctions (JJA) is proposed. Each Josephson junction is placed in the center of a separate dipole antenna. Antennas at a distance of about a half wavelength from each other form a beam patter
Autor:
E.A. Stepantsov, Vladimir V. Roddatis, Tord Claeson, Eva Olsson, N.A. Kiselev, Alexander L. Vasiliev, Zdravko Ivanov
Publikováno v:
Thin Solid Films
The structure of yttrium stabilized ZrO2 crystals with intermediate seam layers of CeO2 and SrTiO3 has been studied by transmission electron microscopy (TEM). Such crystals were fabricated by the solid phase intergrowth method (SPI). The interfaces b
Autor:
Fabian Wenger, E.A. Stepantsov, Zdravko Ivanov, Shawn-Yu Lin, Tord Claeson, Praveen Chaudhari, Neeraj Khare
Publikováno v:
Physical Review B. 57:602-607
We report tunneling measurements on a large number of bicrystal ${\mathrm{YBa}}_{2}{\mathrm{Cu}}_{3}{\mathrm{O}}_{7\ensuremath{-}\ensuremath{\delta}}$ Josephson junctions. The orientations of the bicrystals relative to their boundary was varied over
Autor:
Dieter Uhl, E.A. Stepantsov, Gabriel Daalmans, Tord Claeson, J. Ramos, H. Uhlmann, Ludwig Bär
Publikováno v:
Applied Superconductivity. 4:375-384
A high- T c DC SQUID amplifier has been prepared and tested. The principle of operation of the amplifier was first proved by using low- T c Nb-Al 2 O 3 -Nb SQUIDs with integrated Nb input coils. A flux gain factor of about 20 was demonstrated at 4.2
Autor:
Z. J. Sun, A. Bogdanov, Erland Wikborg, E.A. Stepantsov, Zdravko Ivanov, V. K. Kaplunenko, T. Freitoft, P. Vase, R. Kromann, T. Holst, Y.Q. Shen, Tord Claeson
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 5:2835-2838
We suggest a new design of Rapid Single Flux Quantum (RSFQ) logic circuits which is based on a single superconducting layer and does not require a superconducting ground plane. The small inductances of about 10 pH, that are obligatory for the RSFQ ap
Publikováno v:
IEEE Transactions on Appiled Superconductivity. 5:3276-3279
We have integrated an array of five High-T/sub c/ Josephson junction oscillators with a Josephson detector junction of high resistance, e.g. 25 /spl Omega/. High impedance detectors are suitable in integrated superconducting receivers. We find the ou
Autor:
Dag Winkler, Jose A. Alarco, N.A. Kiselev, A. Ya. Tzalenchuk, O.I. Lebedev, Alexander L. Vasiliev, Zdravko Ivanov, Eva Olsson, E.A. Stepantsov
Publikováno v:
Physica C: Superconductivity. 247:263-279
The microstructure of artificial grain boundaries in YBa2Cu3O7−δ (YBCO) thin films grown on [001] tilt YZrO2 (YSZ) bicrystal substrates has been characterized using transmission electron microscopy and atomic force microscopy. Despite a relativ
Publikováno v:
Physica Status Solidi (a). 144:383-392
Results of a HREM investigation of artificial grain boundaries (AGBs) in crystalline composites, obtained by solid-phase intergrowth of garnet crystals, are described. In bi-crystals with similarly oriented parts AGB is not revealed. Small misalignme