Correlations and semimetallic behaviors in pyrochlore oxide Cd2Re2O7

被引：34
作者：
Hiroi, Z [1 ]
Hanawa, M
Muraoka, Y
Harima, H
机构：
[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[2] Osaka Univ, ISIR Sanken, Osaka 5670047, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2003年 / 72卷 / 01期
关键词：
pyrochlore oxide; Cd2Re2O7; semimetal; phase transition; electrical resistivity; Hall resistivity;
D O I：
10.1143/JPSJ.72.21
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Electronic properties of the metallic pyrochlore oxide Cd2Re2O7 are studied by means of electrical resistivity and Hall measurements. Semimetallic band structures are revealed as expected from band structure calculations. It is found that large changes in carrier density and mass occur at the structural phase transition at T-s1 = 200K. A large mass enhancement is observed, particularly for the high-temperature phase with the ideal pyrochlore structure, suggesting that an anomalous correlation has an important effect on the itinerant electrons in the pyrochlore lattice.
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页码：21 / 24
页数：4
相关论文
共 16 条
  • [1] Superconductivity at 1 K in Cd2Re2O7 -: art. no. 187001
    Hanawa, M
    Muraoka, Y
    Tayama, T
    Sakakibara, T
    Yamaura, J
    Hiroi, Z
    [J]. PHYSICAL REVIEW LETTERS, 2001, 87 (18) : 187001 - 1
  • [2] Structural phase transition in the superconducting pyrochlore oxide Cd2Re2O7
    Hanawa, M
    Yamaura, J
    Muraoka, Y
    Sakai, F
    Hiroi, Z
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2002, 63 (6-8) : 1027 - 1030
  • [3] Electronic bandstructures on 5d-transition metal pyrochlore:: Cd2Re2O7 and Cd2Os2O7
    Harima, H
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2002, 63 (6-8) : 1035 - 1038
  • [4] Superconducting properties of the pyrochlore oxide Cd2Re2O7
    Hiroi, Z
    Hanawa, M
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2002, 63 (6-8) : 1021 - 1026
  • [5] Second phase transition in pyrochlore oxide Cd2Re2O7
    Hiroi, Z
    Yamaura, JI
    Muraoka, Y
    Hanawa, M
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2002, 71 (07) : 1634 - 1636
  • [6] High-pressure study on the superconducting pyrochlore oxide Cd2Re2O7
    Hiroi, Z
    Yamauchi, T
    Yamada, T
    Hanawa, M
    Ohishi, Y
    Shimomura, O
    Abliz, M
    Hedo, M
    Uwatoko, Y
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2002, 71 (06) : 1553 - 1557
  • [7] Superconductivity in the correlated pyrochlore Cd2Re2O7 -: art. no. 180503
    Jin, R
    He, J
    McCall, S
    Alexander, CS
    Drymiotis, F
    Mandrus, D
    [J]. PHYSICAL REVIEW B, 2001, 64 (18)
  • [8] Fluctuation effects on the physical properties of Cd2Re2O7 near 200 K
    Jin, R
    He, J
    Thompson, JR
    Chisholm, MF
    Sales, BC
    Mandrus, D
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (05) : L117 - L123
  • [9] Quasiparticle excitation in the superconducting pyrochlore Cd2Re2O7 probed by muon spin rotation
    Kadono, R
    Higemoto, W
    Koda, A
    Kawasaki, Y
    Hanawa, M
    Hiroi, Z
    [J]. JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2002, 71 (03) : 709 - 712
  • [10] Kamiyama T., UNPUB
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