Temperature dependent electronic structure of Pr{sub 0.67}Sr{sub 0.33}MnO{sub 3} film probed by X-ray absorption near edge structure

Journal Article · Wed May 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4862092· OSTI ID:22273895

Zhang, Bangmin ^[1]; Sun, Cheng-Jun; Heald, Steve M. ^[1]; Chen, Jing-Sheng; Venkatesan, T. ^[2]

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1. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
2. NUSNNI-Nanocore, National University of Singapore, Singapore 117411 (Singapore)

The Mn K edge X-ray absorption near edge structures (XANES) of Pr{sub 0.67}Sr{sub 0.33}MnO{sub 3} film (100 nm) on (001) LaAlO{sub 3} substrate was measured at different temperatures to probe the MnO{sub 6} octahedron distortion and corresponding electronic structure. The absorption of high temperature paramagnetic-insulator phase differed from that of the low temperature ferromagnetic-metal phase. The temperature-dependent absorption intensity of Mn K edge XANES was correlated with the relaxation of distorted MnO{sub 6} octahedron, which changed the crystal field acting on the Mn site and the related electronic structure and properties. At low temperature, the splitting of Mn majority e{sub g} orbitals decreased and the density of states above the Fermi level increased in the relaxed MnO{sub 6} octahedron, as reflected by a wider separation between two sub-peaks in the pre-edge XANES spectra.

• OSTI ID: 22273895
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ABSORPTION SPECTRA
ABSORPTION SPECTROSCOPY
ALUMINATES
CRYSTAL FIELD
ELECTRONIC STRUCTURE
FERMI LEVEL
LANTHANUM COMPOUNDS
MANGANATES
MANGANESE OXIDES
PARAMAGNETISM
PRASEODYMIUM COMPOUNDS
RELAXATION
STRONTIUM COMPOUNDS
SUBSTRATES
TEMPERATURE DEPENDENCE
THIN FILMS
X RADIATION
X-RAY SPECTROSCOPY