Browsing by Author "Carlson, K. Douglas"

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    Electrodynamics of the organic superconductors κ-(BEDT-TTF)2Cu(NCS)2 and κ-(BEDT-TTF)2Cu[N(CN)2]Br
    (1994) Dressel, Martin; Klein, Olivier; Grüner, George; Carlson, K. Douglas; Wang, H. Hau; Williams, Jack M.
    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-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-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.
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    Low-temperature microwave surface impedance of the conventional organic superconductor κ-(BEDT-TTF)2Cu(NCS)2
    (1993) Dressel, Martin; Bruder, S.; Grüner, George; Carlson, K. Douglas; Wang, H. Hau; Williams, Jack M.
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