Resonant soft x-ray scattering investigation of orbital and magnetic ordering in La{sub 0.5}Sr{sub 1.5}MnO{sub 4}

Journal Article · Wed Jun 15 00:00:00 EDT 2005 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.71.245102· OSTI ID:20719067

Wilkins, S B ^[1]; Stojic, N; Binggeli, N ^[2]; Beale, T A.W.; Hatton, P D ^[3]; Castleton, C W.M. ^[4]; Bencok, P ^[5]; Prabhakaran, D; Boothroyd, A T ^[6]; Altarelli, M ^[2]

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1. European Commission, Joint Research Center, Institute for Transuranium Elements, Hermann von Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen (Germany)
2. Abdus Salam International Centre for Theoretical Physics, Trieste 34014 (Italy)
3. Department of Physics, University of Durham, Rochester Building, South Road, Durham, DH1 3LE (United Kingdom)
4. Materials and Semiconductor Physics Laboratory, Royal Institute of Technology (KTH), Electrum 229, 16440 Kista (Sweden)
5. European Synchrotron Radiation Facility, Boite Postal 220, F-38043 Grenoble Cedex (France)
6. Department of Physics, University of Oxford, Clarendon Laboratory, Parks Road, Oxford, OX1 3PU (United Kingdom)

We report resonant x-ray scattering data of the orbital and magnetic ordering at low temperatures at the Mn L{sub 2,3} edges in La{sub 0.5}Sr{sub 1.5}MnO{sub 4}. The orderings display complex energy features close to the Mn absorption edges. Systematic modeling with atomic multiplet crystal field calculations was used to extract meaningful information regarding the interplay of spin, orbital, and Jahn-Teller order. These calculations provide a good general agreement with the observed energy dependence of the scattered intensity for a dominant orbital ordering of the d{sub x{sup 2}}{sub -z{sup 2}}/d{sub y{sup 2}}{sub -z{sup 2}} type. In addition, the origins of various spectral features are identified. The temperature dependence of the orbital and magnetic ordering was measured and suggests a strong interplay between the magnetic and orbital order parameters.

• OSTI ID: 20719067
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 71, Issue 24; Other Information: DOI: 10.1103/PhysRevB.71.245102; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION
ABSORPTION SPECTROSCOPY
CRYSTAL FIELD
ENERGY DEPENDENCE
JAHN-TELLER EFFECT
LANTHANUM COMPOUNDS
MANGANATES
ORDER PARAMETERS
SIMULATION
SOFT X RADIATION
SPIN
STRONTIUM COMPOUNDS
TEMPERATURE DEPENDENCE
X-RAY DIFFRACTION
X-RAY SPECTROSCOPY