skip to main content

SciTech ConnectSciTech Connect

Title: 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

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.
Authors:
 [1] ;  [2] ;  [2] ; ;  [1] ; ;  [3] ;  [4] ;  [2] ;  [2]
  1. Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  2. (Singapore)
  3. Department of Materials Science and Engineering, National University of Singapore, Singapore 117576 (Singapore)
  4. NUSNNI-Nanocore, National University of Singapore, Singapore 117411 (Singapore)
Publication Date:
OSTI Identifier:
22273895
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal 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)
Country of Publication:
United States
Language:
English
Subject:
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