Unified origin for the 3D magnetism and superconductivity in NaxCoO2

被引：21
|
作者：
Kuroki, Kazuhiko [1 ]
Ohkubo, Shuhei
Nojima, Takumi
Arita, Ryotaro
Onari, Seiichiro
Tanaka, Yukio
机构：
[1] Univ Electrocommun, Dept Appl Phys & Chem, Tokyo 1828585, Japan
[2] RIKEN, Wako, Saitama 3510198, Japan
[3] Nagoya Univ, Dept Appl Phys, Nagoya, Aichi 4648603, Japan
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 13期
关键词：
D O I：
10.1103/PhysRevLett.98.136401
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We analyze the origin of the three-dimensional (3D) magnetism observed in nonhydrated Na-rich NaxCoO2 within an itinerant spin picture using a 3D Hubbard model. The origin is identified as the 3D nesting between the inner and outer portions of the Fermi surface, which arise due to the local minimum structure of the a(1g) band at the Gamma-A line. The calculated spin wave dispersion strikingly resembles the neutron scattering result. We argue that this 3D magnetism and the spin fluctuations responsible for superconductivity in the hydrated systems share essentially the same origin.
引用
收藏
页数：4
相关论文
共 50 条
  • [1] Unified origin for superconductivity and 3D magnetism in NaxCoO2
    Kuroki, K.
    Okubo, S.
    Nojima, T.
    Usui, H.
    Arita, R.
    Onari, S.
    Tanaka, Y.
    [J]. PHYSICA B-CONDENSED MATTER, 2008, 403 (5-9) : 1151 - 1153
  • [2] Unified origin for superconductivity, magnetism, and large thermopower in NaxCoO2
    Kuroki, K.
    Arita, R.
    Okubo, S.
    Nojima, T.
    Usui, H.
    Onari, S.
    Tanaka, Y.
    [J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2008, 69 (12) : 3360 - 3364
  • [3] Origin of strong correlations and superconductivity in NaxCoO2
    Khaliullin, Giniyat
    Chaloupka, Jiri
    [J]. PHYSICAL REVIEW B, 2008, 77 (10)
  • [4] Competing Magnetism and Superconductivity in NaxCoO2 at Half Doping
    Banobre-Lopez, Manuel
    Rivadulla, Francisco
    Lopez-Quintela, M. Arturo
    Rivas, Jose
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (28) : 9632 - 9633
  • [5] Role of doping and dimensionality in the superconductivity of NaxCoO2
    Bañobre-López, M
    Rivadulla, F
    Caudillo, R
    López-Quintela, MA
    Rivas, J
    Goodenough, JB
    [J]. CHEMISTRY OF MATERIALS, 2005, 17 (08) : 1965 - 1968
  • [6] Spin fluctuations and 3D itinerant magnetism in NaxCoO2: Slave-boson mean-field study
    Tang, Huai-Bao
    Li, Guang
    Sun, Jin
    Ma, Yong-Qing
    [J]. PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2012, 249 (06): : 1292 - 1297
  • [7] Possible unconventional superconductivity and weak magnetism in NaxCoO2•yH2O probed by μSR
    Higemoto, W
    Ohishi, K
    Koda, A
    Kadono, R
    Sakurai, H
    Takada, K
    Takayama-Muromachi, E
    Sasaki, T
    [J]. PHYSICA B-CONDENSED MATTER, 2006, 374 : 274 - 277
  • [8] Interplay between magnetism and Na concentration in NaxCoO2
    Assadi, M. H. N.
    Katayama-Yoshida, H.
    [J]. FUNCTIONAL MATERIALS LETTERS, 2015, 8 (03)
  • [9] Magnetism and structure of LixCoO2 and comparison to NaxCoO2
    Hertz, J. T.
    Huang, Q.
    McQueen, T.
    Klimczuk, T.
    Bos, J. W. G.
    Viciu, L.
    Cava, R. J.
    [J]. PHYSICAL REVIEW B, 2008, 77 (07):
  • [10] Synthesis and superconductivity of NaxCoO2•yH2O
    Sakurai, H
    Takada, K
    Sasaki, T
    Takayama-Muromachi, E
    [J]. CHINESE JOURNAL OF PHYSICS, 2005, 43 (03) : 566 - 573
12345