Transport and magnetic properties of Y2-xBixRu2O7

S. Yoshii, K. Murata, M. Sato

研究成果: Conference article査読

2 被引用数 (Scopus)

抄録

Transport and magnetic properties of the pyrochlore ruthenates Y2-xBixRu2O7 have been studied. In Y2Ru2O7, the specific heat shows a large jump at a temperature T = TG, where the transition to the spin-glass state with decreasing T is observed, in contrast with ordinary behavior found in typical spin-glass compounds. The transition temperature TG decreases with increasing x and goes to zero at x = xc in the region of the insulator-metal phase boundary. The electronic specific heat coefficient γ is enhanced significantly with decreasing x from 2.0, indicating an increase of the effective d-electron mass, and exhibits a pronounced peak at xc. Near the metal-insulator phase boundary, the Hall coefficient shows a T-dependent behavior and the Hall angle obeys a T2 law above TG, which is often found in the high-Tc cuprates.

本文言語English
ページ(範囲)619-621
ページ数3
ジャーナルPhysica B: Condensed Matter
281-282
DOI
出版ステータスPublished - 2000 6 1
イベントYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn
継続期間: 1999 8 241999 8 28

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 電子工学および電気工学

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