Evidence of point nodes in superconducting gap of borocarbide superconductor YNi2B2C

被引：2
|
作者：
Kamata, K
Izawa, K
Nakajima, Y
Matsuda, Y
Watanabe, T
Nohara, M
Takagi, H
Takeya, H
Hirata, K
Thalmeier, P
Maki, K
机构：
[1] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan
[2] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 113865, Japan
[3] Univ Tokyo, Dept Adv Mat Sci, Bunkyo Ku, Tokyo 1130033, Japan
[4] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[5] Max Planck Inst Chem Phys Solid, D-01187 Dresden, Germany
[6] Max Planck Inst Phys Komplexer Syst, D-01187 Dresden, Germany
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 388卷
关键词：
borocarbides; superconducting gap structure; thermal conductivity;
D O I：
10.1016/S0921-4534(02)02719-3
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In order to determine the superconducting gap structure of the borocarbide superconductor YNi2B2C, we have measured the angular variation of the c-axis thermal conductivity kappa(zz) in magnetic field rotated within the ab-planes. A clear fourfold symmetry with narrow cusps was observed in the angular variation of kappa(zz). These results provide a strong evidence that the gap function has point nodes which are located along the a- and b-axes of the crystal. (C) 2003 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：185 / 186
页数：2
相关论文
共 50 条
  • [1] Calculated positions of point nodes in the gap structure of the borocarbide superconductor YNi2B2C
    Nagai, Yuki
    Kato, Yusuke
    Hayashi, Nobuhiko
    Yamauchi, Kunihiko
    Harima, Hisatomo
    PHYSICAL REVIEW B, 2007, 76 (21)
  • [2] Gap function with point nodes in borocarbide superconductor YNi2B2C -: art. no. 137006
    Izawa, K
    Kamata, K
    Nakajima, Y
    Matsuda, Y
    Watanabe, T
    Nohara, M
    Takagi, H
    Thalmeier, P
    Maki, K
    PHYSICAL REVIEW LETTERS, 2002, 89 (13)
  • [3] Point-Contact Spectroscopy of the Borocarbide Superconductor YNi2B2C in the Normal and Superconducting State
    D. L. Bashlakov
    Yu. G. Naidyuk
    I. K. Yanson
    G. Behr
    S. -L. Drechsler
    G. Fuchs
    L. Schultz
    D. Souptel
    Journal of Low Temperature Physics, 2007, 147 : 335 - 352
  • [4] Point-contact spectroscopy of the borocarbide superconductor YNi2B2C
    Naidyuk, Yu. G.
    Bashlakov, D. L.
    Yanson, I. K.
    Fuchs, G.
    Behr, G.
    Souptel, D.
    Drechsler, S.-L.
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 : 103 - 104
  • [5] Point-contact spectroscopy of the borocarbide superconductor YNi2B2C in the normal and superconducting state
    Bashlakov, D. L.
    Naidyuk, Yu. G.
    Yanson, I. K.
    Behr, G.
    Drechsler, S. -L.
    Fuchs, G.
    Schultz, L.
    Souptel, D.
    JOURNAL OF LOW TEMPERATURE PHYSICS, 2007, 147 (3-4) : 335 - 352
  • [6] Anomalous magnetoresistance of borocarbide superconductor YNi2B2C
    Chu, RK
    Zhang, ZH
    Chu, WK
    Miller, JH
    INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2000, 14 (29-31): : 3412 - 3417
  • [7] Fermi surface studies of the borocarbide superconductor YNi2B2C
    Nguyen, LH
    Goll, G
    Steep, E
    Jansen, AGM
    Wyder, P
    Jepsen, O
    Heinecke, M
    Winzer, K
    JOURNAL OF LOW TEMPERATURE PHYSICS, 1996, 105 (5-6) : 1653 - 1658
  • [8] Anisotropy of the superconducting gap of the borocarbide superconductor YNi2B2C with ultrasonic attenuation -: art. no. 147002
    Watanabe, T
    Nohara, M
    Hanaguri, T
    Takagi, H
    PHYSICAL REVIEW LETTERS, 2004, 92 (14) : 147002 - 1
  • [9] 13C NMR study of borocarbide superconductor YNi2B2C
    Saito, T
    Oka, N
    Koyama, K
    Mizuno, K
    Endo, K
    Deguchi, H
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1998, 177 : 557 - 558
  • [10] Evidence of multiband superconductivity in the quaternary borocarbide superconductor YNi2B2C using directional point-contact spectroscopy
    Raychaudhuri, Pratap
    Sheet, Goutam
    Mukhopadhyay, Sourin
    Takeya, H.
    PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2007, 460 : 95 - 98
12345