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Journal Article

Phonon anomalies in the infrared conductivity of the RuSr2GdCu2O8 ferromagnetic superconductor

MPS-Authors
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Boris,  A. V.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Bernhard,  C.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Kovaleva,  N. N.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Mandal,  P.
Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Boris, A. V., Bernhard, C., Kovaleva, N. N., Mandal, P., & Loidl, A. (2002). Phonon anomalies in the infrared conductivity of the RuSr2GdCu2O8 ferromagnetic superconductor. Physica B, 312-313, 797-799.


Cite as: https://hdl.handle.net/21.11116/0000-000E-EDAB-7
Abstract
We have performed ellipsometric measurements of the infrared
dielectric response of RuSr2GdCu2O8 polycrystalline ceramics.
The transformation of the Cu-O bending phonon mode at 288 cm(-
1) in the normal state to a broad absorption band at 308 cm(-1)
in the superconducting state has been observed. This
observation strikingly resembles the c-axis optical
conductivity data reported for the YBa2Cu3O6.45 crystals. The
anomalous softening of the Ru-related phonon mode at 190 cm(-1)
has been observed on decreasing temperature below the magnetic
T-M = 133 K transition temperature. (C) 2002 Elsevier Science
B.V. All rights reserved.