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 04:00:00 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), Journal Name: Physical Review Letters; (USA) Vol. 63:8; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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