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Title: Raman scattering spectra of a superconducting Pb/sub 2/Sr/sub 2/Y/sub 0. 75/Ca/sub 0. 25/Cu/sub 3/O/sub 8+/delta// single crystal

Abstract

Raman Spectra of a superconducting Pb/sub 2/Sr/sub 2/Y/sub 0.75/Ca/sub 0.25/Cu/sub 3/O/sub 8+/delta// single crystal (/ital T//sub /ital c///approx/20 K) have been measured at different temperatures between 10 and 300 K. Through their polarization properties, the Raman features observed at 90, 150, 240, 430, 480, and 570 cm/sup /minus/1/ are identified as the six /ital A//sub /ital g// modes, while the mode positioned at 325 cm/sup /minus/1/ has /ital B//sub 1/ital g// symmetry. The components of the Raman tensor for these phonons have been determined. The frequencies and assignments obtained here correlate well with lattice-dynamical calculations for Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/. The possible effect of the distortion of the oxygen atom from the ideal rocksalt-type structure of the PbO layers is discussed.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Max-Planck-Institut fur Festkorperforschung, Heisenbergstrasse 1, D-7000 Stuttgart 80, Federal Republic of Germany (DE)
OSTI Identifier:
5917421
Resource Type:
Journal Article
Journal Name:
Phys. Rev. B: Condens. Matter; (United States)
Additional Journal Information:
Journal Volume: 40:4
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CALCIUM OXIDES; RAMAN SPECTRA; COPPER OXIDES; LEAD OXIDES; STRONTIUM OXIDES; YTTRIUM OXIDES; ATOMIC MODELS; LOW TEMPERATURE; MEDIUM TEMPERATURE; MONOCRYSTALS; PHONONS; SUPERCONDUCTORS; TRANSITION TEMPERATURE; ULTRALOW TEMPERATURE; VERY LOW TEMPERATURE; ALKALINE EARTH METAL COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COPPER COMPOUNDS; CRYSTALS; LEAD COMPOUNDS; MATHEMATICAL MODELS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; QUASI PARTICLES; SPECTRA; STRONTIUM COMPOUNDS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; 360204* - Ceramics, Cermets, & Refractories- Physical Properties; 656100 - Condensed Matter Physics- Superconductivity

Citation Formats

Liu, R, Cardona, M, Gegenheimer, B, Heyen, E T, and Thomsen, C. Raman scattering spectra of a superconducting Pb/sub 2/Sr/sub 2/Y/sub 0. 75/Ca/sub 0. 25/Cu/sub 3/O/sub 8+/delta// single crystal. United States: N. p., 1989. Web. doi:10.1103/PhysRevB.40.2654.
Liu, R, Cardona, M, Gegenheimer, B, Heyen, E T, & Thomsen, C. Raman scattering spectra of a superconducting Pb/sub 2/Sr/sub 2/Y/sub 0. 75/Ca/sub 0. 25/Cu/sub 3/O/sub 8+/delta// single crystal. United States. https://doi.org/10.1103/PhysRevB.40.2654
Liu, R, Cardona, M, Gegenheimer, B, Heyen, E T, and Thomsen, C. 1989. "Raman scattering spectra of a superconducting Pb/sub 2/Sr/sub 2/Y/sub 0. 75/Ca/sub 0. 25/Cu/sub 3/O/sub 8+/delta// single crystal". United States. https://doi.org/10.1103/PhysRevB.40.2654.
@article{osti_5917421,
title = {Raman scattering spectra of a superconducting Pb/sub 2/Sr/sub 2/Y/sub 0. 75/Ca/sub 0. 25/Cu/sub 3/O/sub 8+/delta// single crystal},
author = {Liu, R and Cardona, M and Gegenheimer, B and Heyen, E T and Thomsen, C},
abstractNote = {Raman Spectra of a superconducting Pb/sub 2/Sr/sub 2/Y/sub 0.75/Ca/sub 0.25/Cu/sub 3/O/sub 8+/delta// single crystal (/ital T//sub /ital c///approx/20 K) have been measured at different temperatures between 10 and 300 K. Through their polarization properties, the Raman features observed at 90, 150, 240, 430, 480, and 570 cm/sup /minus/1/ are identified as the six /ital A//sub /ital g// modes, while the mode positioned at 325 cm/sup /minus/1/ has /ital B//sub 1/ital g// symmetry. The components of the Raman tensor for these phonons have been determined. The frequencies and assignments obtained here correlate well with lattice-dynamical calculations for Bi/sub 2/Sr/sub 2/CaCu/sub 2/O/sub 8/. The possible effect of the distortion of the oxygen atom from the ideal rocksalt-type structure of the PbO layers is discussed.},
doi = {10.1103/PhysRevB.40.2654},
url = {https://www.osti.gov/biblio/5917421}, journal = {Phys. Rev. B: Condens. Matter; (United States)},
number = ,
volume = 40:4,
place = {United States},
year = {Tue Aug 01 00:00:00 EDT 1989},
month = {Tue Aug 01 00:00:00 EDT 1989}
}