Anisotropy of the thermal conductivity of YBa sub 2 Cu sub 3 O sub 7 minus y

Journal Article · Wed Nov 01 04:00:00 EST 1989 · Physical Review (Section) B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.40.9389· OSTI ID:5300754

Hagen, S J; Wang, Z Z; Ong, N P ^[1]

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1. Joseph Henry Laboratories of Physics, Princeton University, Princeton, New Jersey 08544 (US)

The thermal conductivity, both in-plane ({kappa}{sub {ital ab}}) and out-of-plane ({kappa}{sub {ital c}}), has been measured in 90-K'' crystals of YBa{sub 2}Cu{sub 3}O{sub 7{minus}{ital y}} from 10 to 330 K. {kappa}{sub {ital ab}} displays an 18 to 40% increase below the transition temperature {ital T}{sub {ital c}} (as in ceramic data). {kappa}{sub {ital c}}, however, is four to five times smaller and shows no anomaly at {ital T}{sub {ital c}}. Comparing these results to {kappa}{sub {ital ab}} of insulating crystals, we find evidence for very strong but highly anisotropic electron-phonon coupling in the normal state. Our results are consistent with a phonon origin for the peak in {kappa}{sub {ital ab}}.

• OSTI ID: 5300754
• Journal Information: Physical Review (Section) B: Condensed Matter; (USA), Journal Name: Physical Review (Section) B: Condensed Matter; (USA) Vol. 40:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ANISOTROPY
BARIUM COMPOUNDS
BARIUM OXIDES
BASIC INTERACTIONS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTROMAGNETIC INTERACTIONS
ELECTRON-PHONON COUPLING
INTERACTIONS
LOW TEMPERATURE
MEDIUM TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ULTRALOW TEMPERATURE
UMKLAPP PROCESSES
VERY LOW TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES