Optical probe of charge-spin-lattice dynamics in half-doped La1.5Sr0.5NiO4

K. Yamamoto, K. Ishizaka, E. Saitoh, S. Shinomori, T. Tanabe, Takuro Katsufuji, Y. Tokura

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    We have investigated the charge-spin-ordering transition in La1.5Sr0.5NiO4 by measurements of Raman and optical conductivity spectra. The checkerboard-type charge ordering below ∼400 K can be probed by activated phonon (A 1g and E.,) and two-magnon (B 1g) modes in the infrared and Raman spectra as well as by formation of pseudogaps in the optical conductivity spectra. Besides, another B2g Raman mode emerges below 150 K together with reduction of the optical gap, which can be attributed to another ordering process, i.e., the stripe formation.

    Original languageEnglish
    Article number014414
    Pages (from-to)144141-144146
    Number of pages6
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume67
    Issue number1
    Publication statusPublished - 2003 Jan 1

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    Optical conductivity
    Lattice vibrations
    conductivity
    probes
    Raman scattering
    infrared spectra
    Raman spectra
    Infrared radiation

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Yamamoto, K., Ishizaka, K., Saitoh, E., Shinomori, S., Tanabe, T., Katsufuji, T., & Tokura, Y. (2003). Optical probe of charge-spin-lattice dynamics in half-doped La1.5Sr0.5NiO4 Physical Review B - Condensed Matter and Materials Physics, 67(1), 144141-144146. [014414].

    Optical probe of charge-spin-lattice dynamics in half-doped La1.5Sr0.5NiO4 . / Yamamoto, K.; Ishizaka, K.; Saitoh, E.; Shinomori, S.; Tanabe, T.; Katsufuji, Takuro; Tokura, Y.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 67, No. 1, 014414, 01.01.2003, p. 144141-144146.

    Research output: Contribution to journalArticle

    Yamamoto, K, Ishizaka, K, Saitoh, E, Shinomori, S, Tanabe, T, Katsufuji, T & Tokura, Y 2003, 'Optical probe of charge-spin-lattice dynamics in half-doped La1.5Sr0.5NiO4 ', Physical Review B - Condensed Matter and Materials Physics, vol. 67, no. 1, 014414, pp. 144141-144146.
    Yamamoto K, Ishizaka K, Saitoh E, Shinomori S, Tanabe T, Katsufuji T et al. Optical probe of charge-spin-lattice dynamics in half-doped La1.5Sr0.5NiO4 Physical Review B - Condensed Matter and Materials Physics. 2003 Jan 1;67(1):144141-144146. 014414.
    Yamamoto, K. ; Ishizaka, K. ; Saitoh, E. ; Shinomori, S. ; Tanabe, T. ; Katsufuji, Takuro ; Tokura, Y. / Optical probe of charge-spin-lattice dynamics in half-doped La1.5Sr0.5NiO4 In: Physical Review B - Condensed Matter and Materials Physics. 2003 ; Vol. 67, No. 1. pp. 144141-144146.
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