Measurement of T sub eff for Cu in YBa sub 2 Cu sub 3 O sub 7 by neutron resonance absorption

Journal Article · Mon Jan 01 04:00:00 EST 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.764· OSTI ID:6963752

Mook, H A ^[1]; Harvey, J A ^[2]; Hill, N W ^[3]

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1. Solid State Division, Oak Ridge National Laboratory, Post Office Box 2008, Oak Ridge, Tennessee 37831-6393 (USa)
2. Engineering Physics and Mathematics, Oak Ridge National Laboratory, Post Office Box 2008, Oak Ridge, Tennessee 37831-6356 (USA)
3. Instrumentation and Controls, Oak Ridge National Laboratory, Post Office Box 2008, Oak Ridge, Tennessee 37831-6354 (USA)

High-resolution transmission measurements were made at room temperature of the shape of the neutron resonance at 230.3 eV for {sup 65}Cu for the high-temperature superconductor YBa{sub 2}Cu{sub 3}O{sub 7}. From the shape of the resonance the effective temperature {ital T}{sub eff} for Cu in the compound was determined. An identical measurement was also made for Cu metal. {ital T}{sub eff} for Cu metal was found to be 314{plus minus}28 K, while the measurement for YBa{sub 2}Cu{sub 3}O{sub 7} yielded a {ital T}{sub eff} of 297{plus minus}28 K. This shows that the Cu phonons in YBa{sub 2}Cu{sub 3}O{sub 7} have the same energy scale as the phonons in Cu metal.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6963752
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:1; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BARYONS
CHALCOGENIDES
COPPER 65
COPPER COMPOUNDS
COPPER ISOTOPES
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LATTICE VIBRATIONS
NEUTRONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHONONS
PHYSICAL PROPERTIES
QUASI PARTICLES
RESONANCE ABSORPTION
STABLE ISOTOPES
SUPERCONDUCTIVITY
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES