Josephson plasma resonance and phonon anomalies in trilayer Bi2Sr2Ca2Cu3O10

The far-infrared (FIR) c axis conductivity of a Bi2223 crystal has been measured by ellipsometry. Below T(c) a strong absorption band develops near 500 cm(-1), corresponding to a transverse Josephson plasmon. The related increase in FIR spectral weight leads to a giant violation of the Ferrell-Glove...

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Bibliographic Details
Published in:Physical review letters 2002-12, Vol.89 (27), p.277001-277001
Main Authors: Boris, A V, Munzar, D, Kovaleva, N N, Liang, B, Lin, C T, Dubroka, A, Pimenov, A V, Holden, T, Keimer, B, Mathis, Y-L, Bernhard, C
Format: Article
Language:English
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Summary:The far-infrared (FIR) c axis conductivity of a Bi2223 crystal has been measured by ellipsometry. Below T(c) a strong absorption band develops near 500 cm(-1), corresponding to a transverse Josephson plasmon. The related increase in FIR spectral weight leads to a giant violation of the Ferrell-Glover-Tinkham sum rule. The gain in c axis kinetic energy accounts for a sizable part of the condensation energy. We also observe phonon anomalies which suggest that the Josephson currents lead to a drastic variation of the local electric field within the block of closely spaced CuO2 planes.
ISSN:0031-9007
DOI:10.1103/PhysRevLett.89.277001