Far infrared reflectivity of V3Si |
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Authors: | S Perkowitz M Merlin LR Testardi |
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Institution: | Department of Physics, Emory University, Atlanta, GA 30322, U.S.A.;Bell Laboratories, Murray Hill, NJ 07974, U.S.A. |
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Abstract: | The change in reflectivity of a transporming sample of V3Si between 19 and 11.5 K exhibits not only the expected superconducting gap behavior (at 4 < ?ω < 6 meV) but unusual structure between 6 and 25 meV. One possible cause is the Holstein absorption process which would indicate an unexpected peak in the phonon parameter α2F at 6 ± 2 meV. Data at 19 and 30 K show that no change in reflectivity due to the structural transformation (~ 21 K) occurs to within ≈ over the same energy range. |
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