Low-temperature microwave surface impedance of the conventional organic superconductor [kappa]-(BEDT-TTF)[sub 2]Cu(NCS)[sub 2]
- Department of Physics and Solid State Science Center, University of California, Los Angeles, California 90024-1547 (United States)
- Chemistry and Material Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
We have performed measurements of the microwave surface impedance [ital Z][sub [ital S]]=[ital R][sub [ital S]]+[ital iX][sub [ital S]] of the organic superconductor [kappa]-(BEDT-TTF)[sub 2]Cu(NCS)[sub 2] down to [ital T]=0.8 K. The reactance [ital X][sub [ital S]], and therefore the penetration depth [lambda], exhibits no temperature dependence for [ital T][much lt][ital T][sub [ital c]]. This result is in full agreement with calculations of the BCS ground state and gives no indication of unconventional pairing. Furthermore, we have evaluated the complex conductivity [cflx [sigma]]=[sigma][sub 1]+[ital i][sigma][sub 2] and find a pronounced peak in [sigma][sub 1] below [ital T][sub [ital c]] which can be identified as a coherence peak.
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 6095554
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 48:13; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360606* -- Other Materials-- Physical Properties-- (1992-)
360607 -- Other Materials-- Superconducting Properties-- (1992-)
ANTITHYROID DRUGS
BEDT-TTF
CARBONIC ACID DERIVATIVES
COPPER COMPOUNDS
CUPRATES
DRUGS
ELECTROMAGNETIC RADIATION
HETEROCYCLIC COMPOUNDS
HORMONE ANTAGONISTS
IMPEDANCE
MICROWAVE RADIATION
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
ORGANIC SUPERCONDUCTORS
OXYGEN COMPOUNDS
PENETRATION DEPTH
RADIATIONS
SUPERCONDUCTORS
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 0000-0013 K
THIOCYANATES
TRANSITION ELEMENT COMPOUNDS