Reduced size of ordered moments of a quasi 1d antiferromagnet Sr{sub 2}CuO{sub 3}

Technical Report · Sun Sep 01 00:00:00 EDT 1996

DOI:https://doi.org/10.2172/373917· OSTI ID:373917

Kojima, K; Larkin, M; Luke, G M ^[1]

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1. Columbia Univ., New York, NY (United States). Dept. of Physics; and others

The quasi one-dimensional antiferromagnet Sr{sub 2}CuO{sub 3} exhibits Neel order of Cu{sup 2+} moments (S = 1/2) at T{sub N} = 5.41(1) K, as demonstrated by (1) almost resolution-limited magnetic Bragg reflections in neutron scattering measurements, and (2) spontaneous muon spin precession in zero-field muon spin relaxation ({mu}SR) measurements. The temperature dependence of the order parameters are consistent between the two experimental techniques. From the neutron data, the authors obtained an upper-limit for the ordered moment size of {approximately} 0.06 {mu}{sub B}. This indicates a significant moment reduction from quantum fluctuations.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); New Energy and Industrial Technology Development Organization, Tokyo (Japan); Japan Society for the Promotion of Science, Tokyo (Japan)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 373917
• Report Number(s): BNL-63339; ON: DE96014897; TRN: AHC29619%%101
• Resource Relation: Other Information: PBD: [1996]
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER OXIDES
ORDER PARAMETERS
STRONTIUM OXIDES
COPPER IONS
NEEL TEMPERATURE
LIMITING VALUES
ANTIFERROMAGNETIC MATERIALS