Anomalous Features in Surface Impedance of Y-Ba-Cu-O Thin Films: Dependence on Frequency, RF and DC Fields

Autor: Velichko, Anton V., Porch, Adrian, Humphreys, Richard G.

Two high-quality Y-Ba-Cu-O thin films on MgO substrates have been investigated using the coplanar resonator technique at 8 and 16 GHz. Both films exhibit an anomalous decrease in their surface impedance, Zs as a function of microwave field, Hrf. In z

Externí odkaz: http://arxiv.org/abs/cond-mat/0008302

Performance of 94GHz receivers for passive imaging.

Autor: Humphreys, Richard G., Taylor, Stephen M., Manning, Paul A., Munday, Paul D., Powell, Jeff

Publikováno v: Proceedings of SPIE; Nov2007 Part 2, Issue 1, p65480H-65480H-10, 10p

High Performance Cryogenic Packaging for Microwave Applications of High Temperature Superconductors.

Autor: Greed, Robert B., Jeffries, Russell F., Voyce, Daniel C., Barkway, Alan J., Humphreys, Richard G., Goodyear, Simon W.

Publikováno v: IEEE Transactions on Applied Superconductivity; Mar2001 Part 1 of 3, Vol. 11 Issue 1, p493, 4p, 1 Black and White Photograph, 2 Diagrams, 1 Graph

Microwave surface impedance of patterned YBa 2Cu 3O 7 thin films

Autor: Porch, Adrian, Lancaster, Michael J., Humphreys, Richard G.

Publikováno v: In Physica B: Physics of Condensed Matter 1994 194 Part 2:1605-1606