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Author Bulut, N. ♦ Scalapino, D. J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword PHYSICS ♦ COPPER OXIDES ♦ ANTIFERROMAGNETISM ♦ HIGH-TC SUPERCONDUCTORS ♦ COLLECTIVE EXCITATIONS ♦ D WAVES ♦ ENERGY GAP ♦ NEUTRON DIFFRACTION ♦ ORDER PARAMETERS ♦ SPIN FLUCTUATIONS
Abstract 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.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-03-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 53
Issue Number 9


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