Structural and electronic properties of pyrochlore-type A 2Re2O7 (A=Ca, Cd, and Pb)

Kenya Ohgushi, Jun Ichi Yamaura, Masaki Ichihara, Yoko Kiuchi, Takashi Tayama, Toshiro Sakakibara, Hirotada Gotou, Takehiko Yagi, Yutaka Ueda

研究成果: Article査読

17 被引用数 (Scopus)


Cd2Re2O7 exhibits a unique structural transition characterized by a loss of the inversion symmetry in a metal. Here, we report on structural and electronic properties for A2Re 2O7 (A=Ca and Pb), and S-substituted Cd2Re 2O7. On the basis of material characteristics, we show that the covalency of particular bonds stabilizes the low-temperature phase without the inversion symmetry. We also observed an incoherent charge transport with a weakly temperature-dependent resistivity on the verge of structural transition. This phenomenon is argued in terms of the polaron formation.

ジャーナルPhysical Review B - Condensed Matter and Materials Physics
出版ステータスPublished - 2011 3 14

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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