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Volumn 68, Issue 6, 1999, Pages 1828-1831

Optical reflectivity spectra measured on cleaved surfaces of La1-xSrxMnO3: Evidence against extremely small drude weight

Author keywords

CMR; Double exchange ferromagnet; Drude weight; Manganite; Optical conductivity

Indexed keywords


EID: 0033414891     PISSN: 00319015     EISSN: None     Source Type: Journal    
DOI: 10.1143/JPSJ.68.1828     Document Type: Article
Times cited : (81)

References (26)
  • 14
    • 5844300652 scopus 로고    scopus 로고
    • refs. 5, 12
    • For the various 3d-transitional metal oxides, ∈∞ is estimated to be 2-10; See refs. 5, 12, and T. Kalsufuji, M. Kasai and Y. Tokura: Phys. Rev. Lett. 76 (1996) 126. We confirmed that the variation of ∈∞ from 1 to 10 yields negligibly small differences in reflectivity below 0.01 eV.
    • (1996) Phys. Rev. Lett. , vol.76 , pp. 126
    • Kalsufuji, T.1    Kasai, M.2    Tokura, Y.3
  • 15
    • 85034125885 scopus 로고    scopus 로고
    • note
    • The Hagen-Rubens formula corresponds to a Drude formula in the limit ℏ/τ → ∞ and hence it is applicable only in the region ω ≪ ℏ/τ.
  • 16
    • 85034129304 scopus 로고    scopus 로고
    • note
    • 7, 8)
  • 23
    • 85034129234 scopus 로고    scopus 로고
    • note
    • We estimated skin depth as the inverse of the absorption coefficient α(ω) = 2ωk(ω)/c and confirmed that the skin-depth becomes longer below 0.1 eV for x = 0.30.
  • 24
    • 0000857067 scopus 로고    scopus 로고
    • For the bilayer manganite, a Drude component was not observed in the optical spectra measured even on the cleaved surfaces [T. Ishikawa, K. Kimura, T. Katsufuji and Y. Tokura: Phys. Rev. B 57 (1998) R8079]. However, this is probably due to the localization of the carriers, suggested by the logarithmic upturn in dc resistivity at low temperatures.
    • (1998) Phys. Rev. B , vol.57
    • Ishikawa, T.1    Kimura, K.2    Katsufuji, T.3    Tokura, Y.4


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.