Weak-coupling model of spin fluctuations in the superconducting state of the layered cuprates

Journal Article · Sat Feb 01 04:00:00 EST 1992 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.45.2371· OSTI ID:7234209

Bulut, N; Scalapino, D J ^[1]

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1. Department of Physics, University of California, Santa Barbara, California 93106 (United States)

Previous work on the modeling of normal-state spin fluctuations in YBa{sub 2}Cu{sub 3}O{sub 7} is extended to the superconducting state. In this paper the effect of superconductivity on the spin fluctuations is approximately treated by using the BCS result for the irreducible susceptibility that enters the random-phase-approximation expression for the dynamic spin susceptibility. The resulting susceptibility is then used to calculate Cu(2) and O(2,3) Knight shifts and nuclear relaxation rates. Calculations are done using both {ital s}- and {ital d}-wave gap symmetries. A comparison of the results with the experimental NMR data on YBa{sub 2}Cu{sub 3}O{sub 7} is presented.

• OSTI ID: 7234209
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:5; ISSN PRBMD; 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
BARIUM COMPOUNDS
BARIUM OXIDES
BCS THEORY
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
KNIGHT EFFECT
MAGNETIC RESONANCE
MINERALS
NUCLEAR MAGNETIC RESONANCE
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
RESONANCE
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES