Interpretation of resistivity of Nd sub 1. 85 Ce sub 0. 15 CuO sub 4 minus y using the electron-phonon spectral function determined from tunneling data

Journal Article · Sat Nov 30 23:00:00 EST 1991 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.44.12102· OSTI ID:5131694

Tralshawala, N; Zasadzinski, J F; Coffey, L ^[1]; Huang, Q ^[2]

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1. Department of Physics, Illinois Institute of Technology, Chicago, Illinois 60616 (United States)
2. Materials Science Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)

Tunneling measurements of {alpha}{sup 2}{ital F}({omega}) of Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}} are shown to be in good agreement with recent published results of the phonon density of states {ital F}({omega}) from neutron scattering. The locations of peaks and valleys in both functions are similar, but the spectral weights differ, suggesting that {alpha}{sup 2} has a strong energy dependence. We have used {alpha}{sup 2}{ital F}({omega}) to estimate the phonon contribution, {rho}{sub phonon}({ital T}), to published data of the temperature-dependent resistivity, {rho}({ital T}), for thin films and single crystals of Nd{sub 1.85}Ce{sub 0.15}CuO{sub 4{minus}{ital y}}. When the phonon contribution is subtracted from the experimental data, a clear {ital T}{sup 2} contribution remains over most of the temperature range. The {ital T}{sup 2} contribution is interpreted to be due to three-dimensional electron-electron scattering, {rho}{sub {ital e}-{ital e}}. There is also a correlation between the magnitude of {rho}{sub {ital e}-{ital e}}, and the value of the plasma frequency, {omega}{sub {ital p}} (obtained from the determination of {rho}{sub phonon}({ital T})), with a scaling which approximates {omega}{sub {ital p}}{sup {minus}10/3}. Such a scaling is expected from the carrier-concentration dependence of electron-electron scattering.

• OSTI ID: 5131694
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:21; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
AMINES
AMMONIUM COMPOUNDS
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
COUPLING
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-ELECTRON INTERACTIONS
ELECTRON-PHONON COUPLING
FILMS
FUNCTIONS
HIGH-TC SUPERCONDUCTORS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
NEODYMIUM COMPOUNDS
NEODYMIUM OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLE INTERACTIONS
PHYSICAL PROPERTIES
QUATERNARY COMPOUNDS
RARE EARTH COMPOUNDS
SPECTRAL FUNCTIONS
SUPERCONDUCTORS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
TUNNEL EFFECT