Crystallographic features of the transitional state in La1-xSrxTiO3

M. Arao*, Y. Koyama, Y. Inoue

*この研究の対応する著者

研究成果: Article査読

抄録

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.

本文言語English
ページ(範囲)3322-3327
ページ数6
ジャーナルInternational Journal of Modern Physics B
14
29-31
出版ステータスPublished - 2000 12 20

ASJC Scopus subject areas

  • 統計物理学および非線形物理学
  • 凝縮系物理学

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