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Author Le, L. P. ♦ Heffner, R. H. ♦ MacLaughlin, D. E. ♦ Kojima, K. ♦ Luke, G. M. ♦ Nachumi, B. ♦ Uemura, Y. J. ♦ Sarrao, J. L. ♦ Fisk, Z.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ LANTHANUM OXIDES ♦ MAGNETIC PROPERTIES ♦ LITHIUM OXIDES ♦ COPPER OXIDES ♦ ANTIFERROMAGNETIC MATERIALS ♦ MUON SPIN RELAXATION ♦ NEEL TEMPERATURE ♦ TEMPERATURE DEPENDENCE
Abstract We report muon-spin-relaxation studies in the Li-doped cuprates La{sub 2}Cu{sub 1{minus}{ital x}}Li{sub {ital x}}O{sub 4} for {ital x}=0.01, 0.05, 0.10, 0.45, and 0.50. For low Li concentrations ({ital x}{le}0.10) we find a rapid suppression of {ital T}{sub {ital N}} as {ital x} increases, but little change in the magnitude and temperature dependence of the antiferromagnetic order parameter. This indicates that Li doping effectively destroys antiferromagnetism (similar to Sr doping, but different from Zn doping) without strongly affecting either the on-site Cu moments or the shape of the spin-wave excitation spectrum. For high Li concentrations we find that the majority of the sample volume is nonmagnetic, suggesting possible singlet-state formation. {copyright} {ital 1996 The American Physical Society.}
ISSN 01631829
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-10-01
Publisher Place United States
Journal Physical Review, B: Condensed Matter
Volume Number 54
Issue Number 13


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