Isomorphic Structural Transition in the β-Pyrochlore Oxide Superconductor KOs2O6

被引：11
|
作者：
Yamaura, Jun-ichi [1 ]
Takigawa, Masashi [1 ]
Yamamuro, Osamu [1 ]
Hiroi, Zenji [1 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2010年 / 79卷 / 04期
关键词：
pyrochlore oxide; rattling; structural transition; heat capacity; X-ray diffraction; NMR; CRYSTAL-STRUCTURE;
D O I：
10.1143/JPSJ.79.043601
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A phase transition observed at T-p = 7.65 K in the beta-pyrochlore oxide superconductor KOs2O6 is studied by means of heat capacity, K-39-NMR, and X-ray diffraction measurements using high-quality single crystals. We find evidence of an isomorphic structural transition at T-p without the off-center freezing of the K ion even below T-p. It is possibly related to the rattling motion of the K ion in an oversized atomic cage.
引用
收藏
页数：4
相关论文
共 50 条
  • [31] RETRACTED: Unprecedented superconductivity in β-pyrochlore osmate KOs2O6 (Retracted Article)
    Hiroi, Z
    Yonezawa, S
    Muraoka, Y
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2004, 73 (07) : 1651 - 1654
  • [32] Fully gapped superconductivity and strong electron correlations in the β-pyrochlore KOS2O6
    Kasahara, Y.
    Shimono, Y.
    Kato, T.
    Hashimoto, K.
    Shibauchi, T.
    Matsuda, Y.
    Yonezawa, S.
    Muraoka, Y.
    Yamaura, J.
    Nagao, Y.
    Hiroi, Z.
    JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2008, 69 (12) : 3228 - 3231
  • [33] Mass enhancement, correlations, and strong-coupling superconductivity in the β-pyrochlore KOs2O6
    Brühwiler, M
    Kazakov, SM
    Karpinski, J
    Batlogg, B
    PHYSICAL REVIEW B, 2006, 73 (09)
  • [34] KOs2O6:: Superconducting rattler
    Kunes, Jan
    Pickett, Warren E.
    PHYSICA B-CONDENSED MATTER, 2006, 378-80 : 898 - 899
  • [35] Raman scattering on KOs2O6
    Hasegawa, T.
    Takasu, Y.
    Ogita, N.
    Udagawa, M.
    Yamaura, J.
    Nagao, Y.
    Hiroi, Z.
    12TH INTERNATIONAL CONFERENCE ON PHONON SCATTERING IN CONDENSED MATTER (PHONONS 2007), 2007, 92
  • [36] Full-gap superconductivity with strong electron correlations in the β-pyrochlore KOs2O6
    Kasahara, Y.
    Shimono, Y.
    Kato, T.
    Hashimoto, K.
    Shibauchi, T.
    Matsuda, Y.
    Yonezawa, S.
    Muraoka, Y.
    Yamaura, J.
    Nagao, Y.
    Hiroi, Z.
    PHYSICA B-CONDENSED MATTER, 2008, 403 (5-9) : 1068 - 1070
  • [37] Interplay of superconductivity and rattling phenomena in β-pyrochlore KOs2O6 studied by photoemission spectroscopy
    Shimojima, T.
    Shibata, Y.
    Ishizaka, K.
    Kiss, T.
    Chainani, A.
    Yokoya, T.
    Togashi, T.
    Wang, X.-Y.
    Chen, C. T.
    Watanabe, S.
    Yamaura, J.
    Yonezawa, S.
    Muraoka, Y.
    Hiroi, Z.
    Saitoh, T.
    Shin, S.
    PHYSICAL REVIEW LETTERS, 2007, 99 (11)
  • [38] Raman scattering in KOs2O6
    Hasegawa, Takumi
    Takasu, Yuichi
    Ogita, Norio
    Udagawa, Masayuki
    Yamaura, Jun-Ichi
    Nagao, Yohei
    Hiroi, Zenji
    PHYSICAL REVIEW B, 2008, 77 (06)
  • [39] Scanning tunneling spectroscopy in the superconducting state and vortex cores of the β-pyrochlore KOs2O6
    Dubois, C.
    Santi, G.
    Cuttat, I.
    Berthod, C.
    Jenkins, N.
    Petrovic, A. P.
    Manuel, A. A.
    Fischer, O.
    Kazakov, S. M.
    Bukowski, Z.
    Karpinski, J.
    PHYSICAL REVIEW LETTERS, 2008, 101 (05)
  • [40] Unprecedented superconductivity in β-pyrochlore osmate KOs2O6 (vol 73, pg 1651, 2004)
    Hiroi, Z
    Yonezawa, S
    Muraoka, Y
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2005, 74 (12) : 3399 - 3399
12345