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Temperature dependence of the phonon structure in the high-temperature superconductor Bi sub 2 Sr sub 2 CaCu sub 2 O sub 8 studied by infrared reflectance spectroscopy

Journal Article · · Physical Review, B: Condensed Matter; (USA)
; ; ;  [1]; ;  [2]
  1. Department of Physics, University of Florida, Gainesville, Florida 32611 (USA)
  2. Bell Communications Research, Red Bank, New Jersey 07701 (USA)
We have investigated a ceramic sample of the high-temperature superconductor Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 8} ({ital T}{sub {ital c}}=85 K) by infrared and visible reflectance spectroscopy at several temperatures both below and above the superconducting transition. We find that the temperature variation in the vibrational region is associated with minima or antiresonance features of the optical conductivity, instead of maxima, indicating strong Fano-type electron-phonon interaction and implying that the phonon structure in the infrared is strongly affected by the {ital ab}-plane response.
OSTI ID:
5561591
Journal Information:
Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 43:13; ISSN 0163-1829; ISSN PRBMD
Country of Publication:
United States
Language:
English