Crystallographic features of the transitional state in La1-xSrxTiO3

M. Arao, Yasumasa Koyama, Y. Inoue

    Research output: Contribution to journalArticle

    Abstract

    Crystallographic features of the transitional state in La1-xSrxTiO3 around x=0.05 have been examined by transmission electron microscopy. In the transitional state, the insulating O' regions with the size of about 3nm are distributed in the metallic O' matrix. Note that the O' and O* phases have the Pbnm structures with the Jahn-Teller distortion and without it, respectively. Because the hole concentration of the O* phase is higher than that of the O' phase, the transitional state is therefore characterized by the static electronic phase separation. In addition, it was also found that the crystal structure of the O' phase should involve not only the (3z2-r2)-type Jahn-Teller displacement with q=0 but also the (x2-y2)-type one with q=<1/2 1/2 0>c in the cubic Brillouin zone.

    Original languageEnglish
    Pages (from-to)3322-3327
    Number of pages6
    JournalInternational Journal of Modern Physics B
    Volume14
    Issue number29-31
    Publication statusPublished - 2000 Dec 20

    Fingerprint

    Jahn-Teller effect
    Hole concentration
    Brillouin zones
    Phase separation
    Crystal structure
    Transmission electron microscopy
    transmission electron microscopy
    crystal structure
    matrices
    electronics
    Crystal Structure
    Phase Separation
    Transmission Electron Microscopy
    Electronics

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)
    • Condensed Matter Physics
    • Electronic, Optical and Magnetic Materials
    • Statistical and Nonlinear Physics
    • Mathematical Physics

    Cite this

    Crystallographic features of the transitional state in La1-xSrxTiO3 . / Arao, M.; Koyama, Yasumasa; Inoue, Y.

    In: International Journal of Modern Physics B, Vol. 14, No. 29-31, 20.12.2000, p. 3322-3327.

    Research output: Contribution to journalArticle

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