[bold q] dependence of the dynamic susceptibility [chi][prime][prime]([bold q],[omega]) in superconducting YBa[sub 2]Cu[sub 3]O[sub 6. 6] ([ital T][sub [ital c]]=46 K)

Journal Article · Tue Nov 01 04:00:00 EST 1994 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.50.12915· OSTI ID:6836489

Sternlieb, B J; Tranquada, J M; Shirane, G ^[1]; Sato, M; Shamoto, S ^[2]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Department of Physics, Nagoya University, Nagoya, 464-01 (Japan)

[bold q]-dependent neutron-scattering measurements of the dynamic susceptibility [chi][prime][prime]([bold q],[omega]) in superconducting YBa[sub 2]Cu[sub 3]O[sub 6.6] are presented. The observed magnetic scattering near the antiferromagnetic zone center has a nontrivial, approximately flat-topped [bold q] dependence. A separable model of the susceptibility, [chi][prime][prime]([bold q],[omega])=[chi][prime][prime]([omega])[ital F]([bold q]), is found to describe this scattering at all energies in the range 2 meV [le][h bar][omega][le]40 meV. Measurements at temperatures above and below [ital T][sub [ital c]]=46 K indicate that the [bold q]-dependent shape'' function, [ital F]([bold q]), is the same in both the superconducting and normal states. A phenomenological expression for [ital F]([bold q]) is presented and the physical significance of its parametrization is discussed. These results are compared with current theories in the literature.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 6836489
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 50:17; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

665411* -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
ALLOY SYSTEMS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRITICAL TEMPERATURE
DIFFRACTION
ENERGY DEPENDENCE
ENERGY RANGE
HIGH-TC SUPERCONDUCTORS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEV RANGE
NEUTRON DIFFRACTION
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
QUATERNARY ALLOY SYSTEMS
SCATTERING
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
YTTRIUM COMPOUNDS
YTTRIUM OXIDES