Lattice thermal conductivity of YBa2Cu3O7-δ

Joshua Cohn, S. A. Wolf, T. A. Vanderah

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

We report a systematic study of the ab-plane thermal conductivity (κ) on single crystal and liquid-phase processed (LPP) specimens of YBa2Cu3O7-δ (δ≤0.16) in the temperature range 10 K≤T≤300 K. From measurements of electrical conductivity on the same specimens and application of the Wiedemann-Franz law we estimate the relative contributions to the heat conduction from the carriers and the lattice. The normal-state phonon scattering mechanisms are quantified by calculations which employ the conventional theory of lattice heat conduction by longitudinal acoustic phonons. Differences in the magnitude and temperature dependence of κ for the LPP and crystal specimens are accounted for by differences in the relative weight of phonon-defect, phonon-carrier, and phonon-phonon scattering. For all specimens phonon-defect scattering predominates throughout most of the temperature range.

Original languageEnglish (US)
Pages (from-to)435-442
Number of pages8
JournalPhysica C: Superconductivity and its Applications
Volume192
Issue number3-4
DOIs
StatePublished - Mar 15 1992
Externally publishedYes

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Thermal conductivity
Phonon scattering
thermal conductivity
Heat conduction
conductive heat transfer
Liquid Crystals
Defects
liquid phases
scattering
Liquids
Phonons
Temperature
defects
Acoustics
Single crystals
Scattering
Crystals
phonons
liquid crystals
temperature dependence

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Lattice thermal conductivity of YBa2Cu3O7-δ . / Cohn, Joshua; Wolf, S. A.; Vanderah, T. A.

In: Physica C: Superconductivity and its Applications, Vol. 192, No. 3-4, 15.03.1992, p. 435-442.

Research output: Contribution to journalArticle

Cohn, Joshua ; Wolf, S. A. ; Vanderah, T. A. / Lattice thermal conductivity of YBa2Cu3O7-δ In: Physica C: Superconductivity and its Applications. 1992 ; Vol. 192, No. 3-4. pp. 435-442.
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