Theory of interband electron Raman scattering in YBa sub 2 Cu sub 3 O sub 7 : A probe of unconventional superconductivity

Journal Article · Mon Aug 21 00:00:00 EDT 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.911· OSTI ID:5485328

Monien, H; Zawadowski, A ^[1]

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1. Department of Physics, University of Illinois at Urbana-Champaign, 1110 West Green Street, Urbana, Illinois 61801 (US)

In the Raman spectra measured on YBa{sub 2}Cu{sub 3}O{sub 7} single crystals there are continua of electronic origin. It is proposed that in addition to the intraband scattering there is an interband contribution due to the charge transfer between the bridging oxygen and the plane, which is strongly coupled to the 330-cm{sup {minus}1} phonon. We suggest that the entirely gapless feature of the spectra with {ital B}{sub 1{ital g}} symmetry is a probe of nodes in the superconducting gap. The compatible {ital d}- and {ital p}-pairing states are listed.

• OSTI ID: 5485328
• Journal Information: Physical Review Letters; (USA), Vol. 63:8; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CHARGE EXCHANGE
COPPER OXIDES
SUPERCONDUCTORS
YTTRIUM OXIDES
COUPLING
MONOCRYSTALS
PHONONS
PROBES
RAMAN EFFECT
SUPERCONDUCTIVITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
CRYSTALS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUASI PARTICLES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties