Interplay between Charge, Orbital, and Magnetic Order in Pr{sub 1-x}Ca{sub x}MnO{sub 3}

Journal Article · Mon Dec 06 00:00:00 EST 1999 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.83.4872· OSTI ID:20217996

Zimmermann, M v ^[1]; Hill, J P ^[1]; Gibbs, Doon ^[1]; Blume, M ^[1]; Casa, D ^[2]; Keimer, B ^[2]; Murakami, Y ^[3]; Tomioka, Y ^[4]; Tokura, Y ^[5]

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1. Department of Physics, Brookhaven National Laboratory, Upton, New York 11973 (United States)
2. Department of Physics, Princeton University, Princeton, New Jersey 08544 (United States)
3. Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, 305-0801, (Japan)
4. Joint Research Center for Atom Technology (JRCAT), Tsukuba 305-0046, (Japan)
5. Department of Applied Physics, University of Tokyo, Tokyo 113-0033, Japan and JRCAT (Japan)

We report resonant x-ray scattering studies of charge and orbital order in Pr{sub 1-x}Ca {sub x}MnO{sub 3} with x=0.4 and 0.5. Below the ordering temperature, T{sub O}=245 K , the charge and orbital order intensities follow the same temperature dependence, including an increase at the antiferromagnetic ordering temperature, T{sub N} . High resolution measurements reveal, however, that long range orbital order is never achieved. Rather, an orbital domain state is formed. Above T{sub O} , the charge order fluctuations are more highly correlated than the orbital fluctuations. We conclude that the charge order drives the orbital order at the transition. (c) 1999 The American Physical Society.

• OSTI ID: 20217996
• Journal Information: Physical Review Letters, Vol. 83, Issue 23; Other Information: PBD: 6 Dec 1999; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
PRASEODYMIUM OXIDES
CALCIUM OXIDES
MANGANESE OXIDES
X-RAY DIFFRACTION
TEMPERATURE DEPENDENCE
PEROVSKITES
GROUND STATES
ORDER PARAMETERS
CHARGE STATES
ANTIFERROMAGNETISM
EXPERIMENTAL DATA