Effects of Strong Magnetic Fluctuations on the Transport Behavior of Pyrochlore Ruthenates near the Metal-Insulator Phase Boundary.
-
- Yoshii Shunsuke
- CREST, Japan Science and Technology Corporation (JST)
-
- Murata Kazuhiro
- Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602
-
- Sato Masatoshi
- Department of Physics, Division of Material Science, Nagoya University, Furo–cho, Chikusa–ku, Nagoya 464–8602 CREST, Japan Science and Technology Corporation (JST)
この論文をさがす
説明
Transport and magnetic properties of pyrochlore ruthenates R2-xBixRu2O7 (R=Sm and Eu), which exhibit the Mott insulator to metal transition with increasing x, have been studied. The electrical resistivity ρ and the Hall coefficient RH are found to strongly couple to the change of the magnetic state, or the transition to the spin-glass state which takes place at temperature T=TG. Near the metal-insulator phase boundary, RH above TG increases rather rapidly with decreasing T even in the metallic phase, and the Hall angle θH follows a simple relation, cot θH ∝ a+bT2, over the wide T-range. At T=TG, RH has a peak and it decreases with decreasing T. These results indicate that strong spin fluctuations above TG induce the anomalous T-dependence of RH in the present magnetically frustrated three-dimensional system and RH decreases as the spin freezing proceeds.
収録刊行物
-
- Journal of the Physical Society of Japan
-
Journal of the Physical Society of Japan 69 (1), 17-20, 2000
一般社団法人 日本物理学会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282679156638208
-
- NII論文ID
- 210000102292
- 110001970974
-
- NII書誌ID
- AA00704814
-
- BIBCODE
- 2000JPSJ...69...17Y
-
- ISSN
- 13474073
- 00319015
-
- NDL書誌ID
- 4970373
-
- 本文言語コード
- en
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可