Neutron scattering from a collective spin fluctuation mode in a CuO{sub 2} bilayer

Journal Article · Fri Mar 01 00:00:00 EST 1996 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.53.5149· OSTI ID:282044

Bulut, N; Scalapino, D J ^[1]

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1. Department of Physics, University of California, Santa Barbara, California 93106--9530 (United States)

A resonance in the magnetic scattering of neutrons from superconducting YBa{sub 2}Cu{sub 3}O{sub 7} has been observed at a momentum transfer of ({pi}/{ital a},{pi}/{ital a},{pi}/{bar {ital c}}), where {ital a} is the in-plane Cu spacing and {bar {ital c}} is the Cu-Cu bilayer spacing. Here we construct a model of a CuO{sub 2} bilayer and show that a collective {ital S}=1, antiferromagnetic excitation with {ital q}=({pi}/{ital a},{pi}/{ital a},{pi}/{bar {ital c}}) arises if the gap has {ital d}{sub {ital x}{sup 2}{minus}{ital y}{sup 2}} symmetry. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 282044
• Journal Information: Physical Review, B: Condensed Matter, Vol. 53, Issue 9; Other Information: PBD: Mar 1996
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
COPPER OXIDES
ANTIFERROMAGNETISM
HIGH-TC SUPERCONDUCTORS
COLLECTIVE EXCITATIONS
D WAVES
ENERGY GAP
NEUTRON DIFFRACTION
ORDER PARAMETERS
SPIN FLUCTUATIONS