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Search Publications by: Leila R. Vale (Fed)

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Displaying 151 - 175 of 247

Coplanar Transmission Lines with Meandering Center Conductors in Y-Ba-Cu-O/Au Bilayers

December 31, 1999
Author(s)
C Weber, Ronald H. Ono, James Booth, Leila R. Vale, Samuel Benz, A. M. Klushin, H. Kohlstedt, C. Buchal, R. Semerad
We have investigated both conventional and meandering coplanar microwave transmission lines patterned in Y-Ba-Cu-O/Au bilayers on yttria-stablized zirconia and sapphire substrates. Within the meandering waveguides, the gentre conductor was deformed from a

Far-Infrared Transmittance and Reflectance of YBa 2 Cu 3 O 7-x Films on Si Substrates

December 31, 1999
Author(s)
A. R. Kumar, Nien F. Zhang, V. A. Boychev, D. B. Tanner, Leila R. Vale, David A. Rudman
The transmittance and reflectance of superconductive YBa 2Cu 3O 7-γ (YBCO) thin films deposited on Si substrates have been measured in the far-infrared frequency region from 10 to 100 cmu-1^ (wavelength from 1000 to 100 micro υ) at temperatures between 10

Large-Area YBa 2 Cu 3 O 7-x Bolometers on Si Substrates

December 31, 1999
Author(s)
Leila R. Vale, Ronald H. Ono, Donald G. McDonald, Robert J. Phelan
We have developed YBa 2Cu 3O 7-x (YBCO) thermometers for large-area (4 mm x 4 mm) electrical substitution bolometers. We passivated the YBCO with a thin Au layer and demonstrated a noise equivalent temperature of 4 nK Hz -1/2. We then used a resistor layer

Coplanar Transmission Lines with Meandering Center Conductors in Y-Ba-Cu-O/Au Bilayers

June 1, 1999
Author(s)
C Weber, Ronald H. Ono, James Booth, Leila R. Vale, Samuel Benz, A. M. Klushin, H. Kohlstedt, R. Semerad
We have investigated both conventional and meandering coplanar microwave transmission lines patterned in Y-Ba-Cu-O/Au bilayers on yttria-stablized zirconia and sapphire substrates. Within the meandering waveguides, the gentre conductor was deformed from a

Interactions Between Bicrystal Josephson Junctions in a Multilayer Structure

June 1, 1999
Author(s)
H. Q. Li, Ronald H. Ono, Leila R. Vale, David A. Rudman, Sy-Hwang Liou
We have fabricated and studied a variety of devices based on stacked Yba 2Cu 3O x bicrystal Josephson junctions in a multilayer structure. The proximity of the junctions in the two layers produces a large number of effects based on interactions between the

Large Area YBa 2 Cu 3 O 7-x Bolometers on Si Substrates

June 1, 1999
Author(s)
Leila R. Vale, Ronald H. Ono, Donald G. McDonald, Robert J. Phelan
We have developed YBa 2Cu 3O 7-x (YBCO) thermometers for large-area (4 mm x 4 mm) electrical substitution bolometers. We passivated the YBCO with a thin Au layer and demonstrated a noise equivalent temperature of 4 nK Hz -1/2. We then used a resistor layer

Long Term Stability of YBCO-Based Josephson Junctions

June 1, 1999
Author(s)
Leila R. Vale, Ronald H. Ono, J. Talvacchio, M. G. Forrester, B. D. Hunt, M. S. DiTorio, Ki Youl Yang, S. Yoshizumi
We report on a study of long term aging in three different types of Yba 2Cu 3O 7-x Josephson junctions. Junction aging will affect the choices made in integrating this technology with actual applications. The junction types used in this study are (a) Co