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Volumn 51, Issue 20, 1995, Pages 13942-13951

Electronic structure of La1-xSrxMnO3 studied by photoemission and x-ray-absorption spectroscopy

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Indexed keywords


EID: 0000353678     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.51.13942     Document Type: Article
Times cited : (571)

References (49)
  • 37
    • 84927336550 scopus 로고    scopus 로고
    • The Lorentzian full width at half maximum (FWHM) is taken to be 2 Γn=2 Γ0+ α Δ E, where 2 Γ0=2.0 eV is the Lorentzian FWHM of the main peak, Δ E is the energy separation from the main peak, and alpha is a constant ( app 0.01). A Gaussian broadening of about 1.6 eV FWHM is also applied.
  • 40
    • 84927336549 scopus 로고    scopus 로고
    • At h ν app 100 eV, the Mn 3d to O 2p relative cross section ( app 17%) is larger than that (app 7%) for h ν app 40 eV or that (app 3%) for h ν app 20 eV but is still much smaller than unity. Therefore, the spectra in Fig. 4 are still dominated by emission from O 2p states.
  • 41
    • 84927336548 scopus 로고    scopus 로고
    • This empirical factor has been successfully used in previous studies on TM oxides (Refs. 2–4).
  • 42
    • 84927336547 scopus 로고    scopus 로고
    • The Lorentzian FWHM of the first peaks of the valence-band and O 1s XAS spectra was fixed to be app 0 eV, and the proportional coefficient for the additional broadening α = 0.001 – 0.005 was assumed. The Gaussian FWHM was taken to be app 1.6 eV.
  • 43
    • 84927336546 scopus 로고    scopus 로고
    • Due to the O 1s core-hole potential, the XAS spectra may be distorted from the line shape of the unoccupied density of states. Such an effect is not well understood at present, but will not affect the qualitative features of the spectra and their changes with x as discussed in the present paper.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.