Electrodynamics of the organic superconductorsinebreak [kappa]-(BEDT-TTF)[sub 2]Cu(NCS)[sub 2] and [kappa]-(BEDT-TTF)[sub 2]Cu[N(CN)[sub 2]]Br

Journal Article · Tue Nov 01 00:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.13603· OSTI ID:7126625

Dressel, M; Klein, O; Gruener, G ^[1]; Carlson, K D; Wang, H H; Williams, J M ^[2]

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1. Department of Physics and Solid State Science Center, University of California, Los Angeles, California 90024-1547 (United States)
2. Chemistry and Material Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

We have performed measurements of the surface impedance in the normal and superconducting states of the title compounds in the millimeter wave-frequency range (1--3 cm[sup [minus]1]), and have evaluated the complex conductivity for different crystallographic orientations. Above the transition temperature, the materials behave like metals with a scattering rate of approximately 20 cm[sup [minus]1]. In the superconducting state the electrodynamics is in good agreement with calculations based on a BCS ground state: while the penetration depth and the coherence length are anisotropic, the superconducting energy gap shows no indications of line nodes.

• DOE Contract Number: W-31-109-ENG-38
• OSTI ID: 7126625
• Journal Information: Physical Review, B: Condensed Matter; (United States), Vol. 50:18; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ORGANIC SUPERCONDUCTORS
ELECTRODYNAMICS
BCS THEORY
COHERENCE LENGTH
MICROWAVE RADIATION
PENETRATION DEPTH
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
DIMENSIONS
ELECTROMAGNETIC RADIATION
LENGTH
RADIATIONS
SUPERCONDUCTORS
TEMPERATURE RANGE
360607* - Other Materials- Superconducting Properties- (1992-)