Magnon and phonon Raman scattering in Bi sub 2 Sr sub 2 Ca sub 1 minus x Y sub x Cu sub 2 O sub 8+ y

Journal Article · Wed Nov 01 00:00:00 EST 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.9292· OSTI ID:5302297

Sugai, S ^[1]; Sato, M ^[2]

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1. Department of Physics, Faculty of Science, Osaka University, Machikaneyama, Toyonaka 560, (Japan)
2. Institute for Molecular Science, Myodaiji, Okazaki 444, (Japan)

From Raman scattering experiments on Bi{sub 2}Sr{sub 2}Ca{sub 1{minus}{ital x}}Y{sub {ital x}}Cu{sub 2}O{sub 8+{ital y}} antiferromagnetism and lattice vibrations are investigated. The exchange integral is estimated as 1140 cm{sup {minus}1} at {ital x}=0.5. The energies of the vibrating modes of the O atoms on the CuO{sub 2} layers show drastic change with the decrease of hole concentration, while the modes of O atoms at the apexes of CuO{sub 5} pyramids do not, which is inverse to the case of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital y}}. It indicates that the doped holes enter O sites on the CuO{sub 2} layers in Bi{sub 2}Sr{sub 2}Ca{sub 1{minus}{ital x}}Y{sub {ital x}}Cu{sub 2}O{sub 8+{ital y}} and at the apexes in YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital y}}.

• OSTI ID: 5302297
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Vol. 40:13; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH OXIDES
PHYSICAL PROPERTIES
CALCIUM OXIDES
COPPER OXIDES
STRONTIUM OXIDES
YTTRIUM OXIDES
ANTIFERROMAGNETISM
EXCHANGE INTERACTIONS
HOLES
LATTICE VIBRATIONS
MAGNONS
MONOCRYSTALS
PHONONS
POLARIZATION
RAMAN SPECTRA
SUPERCONDUCTIVITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
CALCIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
INTERACTIONS
MAGNETISM
OXIDES
OXYGEN COMPOUNDS
QUASI PARTICLES
SPECTRA
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties