Neel transition and sublattice magnetization of pure and doped La sub 2 CuO sub 4

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

DOI:https://doi.org/10.1103/PhysRevB.45.7430· OSTI ID:7116027

Keimer, B ^[1]; Aharony, A ^[2]; Auerbach, A ^[3]; Birgeneau, R J; Cassanho, A ^[1]; Endoh, Y ^[4]; Erwin, R W ^[5]; Kastner, M A ^[1]; Shirane, G ^[6]

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1. Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
2. Center for Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States) School of Physics Astronomy, Tel Aviv University, Tel Aviv 69978 (Israel)
3. Department of Physics, Boston University, Boston, Massachusetts 02215 (United States)
4. Department of Physics, Tohoku University, Sendai 980 (Japan)
5. National Institute of Standards and Technology, Gaithersburg, Maryland 20899 (United States)
6. Brookhaven Nati

We have measured the sublattice magnetization of stoichiometric La{sub 2}CuO{sub 4} ({ital T}{sub {ital N}}=325 K) and La{sub 2}Cu{sub 0.95}Zn{sub 0.05}O{sub 4} ({ital T}{sub {ital N}}=157 K). We discuss the data for La{sub 2}CuO{sub 4} and other lamellar copper oxides in terms of the quantum Heisenberg model including weak {ital XY} anisotropy and interlayer coupling. Spin-wave theory and a generalized Schwinger-boson mean-field theory are used to predict the ordered moment as a function of temperature without adjustable parameters. We also discuss the influence of different dopants on the Neel temperature and sublattice magnetization.

• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7116027
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 45:13; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL MODELS
HEISENBERG MODEL
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MAGNETIC MOMENTS
MAGNETIZATION
MATHEMATICAL MODELS
MEAN-FIELD THEORY
NEEL TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SPIN WAVES
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ZINC COMPOUNDS
ZINC OXIDES