Neutron scattering from a [ital d][sub [ital x]][sup 2][minus][ital y][sup 2]-wave superconductor with strong impurity scattering and Coulomb correlations
- Department of Physics, University of California, Santa Barbara, California 93106-9530 (United States)
We calculate the spin susceptibility at and below [ital T][sub [ital c]] for a [ital d][sub [ital x]][sup 2][minus][ital y][sup 2]-wave superconductor with resonant impurity scattering and Coulomb correlations. Both the impurity scattering and the Coulomb correlations act to maintain peaks in the spin susceptibility, as a function of momentum, at the Brillouin zone edge. These peaks would otherwise be suppressed by the superconducting gap. At the highest impurity concentration considered here, the predicted amount of suppression of the imaginary part of the spin susceptibility in the superconducting state compared to the normal state is in qualitative agreement with results from recent magnetic neutron-scattering experiments on La[sub 1.86]Sr[sub 0.14]CuO[sub 4] for momentum values at the zone edge and along the zone diagonal. The predicted peak widths in the superconducting state, however, are narrower than those in the normal state, a narrowing which has not been observed experimentally.
- OSTI ID:
- 6701383
- Journal Information:
- Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 51:1; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEAMS
COULOMB FIELD
D WAVES
ELECTRIC FIELDS
IMPURITIES
INELASTIC SCATTERING
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
NEUTRON BEAMS
NUCLEON BEAMS
PARTIAL WAVES
PARTICLE BEAMS
PHYSICAL PROPERTIES
RANDOM PHASE APPROXIMATION
RESONANCE SCATTERING
SCATTERING
SUPERCONDUCTORS
TEMPERATURE DEPENDENCE