The microwave surface impedance of high-T sub c superconductors

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:5901485

Piel, H; Muller, G ^[1]

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1. Fachbereich Physik der Bergischen Universitat, Gaussstr. 20, D-5600 Wuppertal 1 (DE)

Passive microwave components are among the first practical devices fabricated from high-T{sub c} superconductors. The surface impedance Z{sub s} determines the quality of a superconducting material for such applications. In this paper the available data on Z{sub s} from more than 30 laboratories around the world are reviewed, to show the frequency, temperature and field dependence of the surface resistance R{sub s} and the temperature dependence of the field penetration depth {lambda}. The data are discussed on the basis of a two-fluid model and are compared with results from the classical superconductors Nb and Nb{sub 3}Sn. A temperatures above 0.8 T{sub c}, Z{sub s} values of classical and high-T{sub c} superconductors show strong similarities and are in close agreement with the Mattis--Bardeen theory.

• OSTI ID: 5901485
• Report Number(s): CONF-900944--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
• Country of Publication: United States
• Language: English

Related Subjects

665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRONIC EQUIPMENT
ELEMENTS
EPITAXY
EQUIPMENT
FILMS
FREQUENCY DEPENDENCE
HIGH-TC SUPERCONDUCTORS
IMPEDANCE
MATERIALS TESTING
METALS
MICROWAVE EQUIPMENT
NIOBIUM
NIOBIUM ALLOYS
OXIDES
OXYGEN COMPOUNDS
PENETRATION DEPTH
RF SYSTEMS
SUPERCONDUCTING FILMS
SUPERCONDUCTORS
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TESTING
TIN ALLOYS
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES