TY - JOUR
T1 - Free-charge-carrier plasmons in Ba1-xKxBiO3
T2 - A close relation to cuprate superconductors
AU - Bozovic, Ivan
AU - Kim, J. H.
AU - Harris, J. S.
AU - Hellman, E. S.
AU - Hartford, E. H.
AU - Chan, P. K.
PY - 1992
Y1 - 1992
N2 - Broad-range reflectance and ellipsometric spectra of high-quality epitaxial superconducting Ba1-xKxBiO3 thin films are reported. From these data, accurate spectral functions of Ba1-xKxBiO3 have been obtained. They are found to be quite similar to the in-plane spectra of the superconducting cuprates; in particular, the frequency dependence of the reflectance is nearly linear, while the dielectric loss function is nearly quadratic below the plasma edge in all of these compounds. It is therefore unlikely that acoustic plasmons or magnetic fluctuations are the cause of these anomalous spectral features.
AB - Broad-range reflectance and ellipsometric spectra of high-quality epitaxial superconducting Ba1-xKxBiO3 thin films are reported. From these data, accurate spectral functions of Ba1-xKxBiO3 have been obtained. They are found to be quite similar to the in-plane spectra of the superconducting cuprates; in particular, the frequency dependence of the reflectance is nearly linear, while the dielectric loss function is nearly quadratic below the plasma edge in all of these compounds. It is therefore unlikely that acoustic plasmons or magnetic fluctuations are the cause of these anomalous spectral features.
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U2 - 10.1103/PhysRevB.46.1182
DO - 10.1103/PhysRevB.46.1182
M3 - Article
AN - SCOPUS:0038290187
VL - 46
SP - 1182
EP - 1187
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 2
ER -