17O Knight shift study in the superconducting state of Sr2RuO4

被引:18
作者
Mukuda, H [1 ]
Ishida, K
Kitaoka, Y
Mao, Z
Mori, Y
Maeno, Y
机构
[1] Osaka Univ, Grad Sch Engr Sci, Dept Phys, Osaka 5608531, Japan
[2] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan
[3] JST, CREST, Kawaguchi, Saitama 3320012, Japan
关键词
D O I
10.1023/A:1022503430240
中图分类号
O59 [应用物理学];
学科分类号
摘要
O-17 Knight Shift measurements in Sr2RuO4 were performed over the ru ide range of magnetic field 3.2-11.4kOe parallel to the basal RuO2 planes. The spin susceptibility is totally unchanged through its T-c, evidencing that the spin-triplet superconducting state is realized in Sr2RuO4. The result indicates that the Cooper pairs consist of the parallel spin pairs \up arrow up arrow> and \down arrow down arrow> with their quantization axis perpendicular to the c-axis direction. The in-plane 2D nearly ferromagnetic spin fluctuations may play a role for the stabilization of this state among various representations of spin-triplet order parameter.
引用
收藏
页码:1587 / 1591
页数:5
相关论文
共 10 条
[1]   Intrinsic superconducting parameters of Sr2RuO4 [J].
Akima, T ;
NishiZaki, S ;
Maeno, Y .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1999, 68 (02) :694-695
[2]   KNIGHT SHIFT IN SUPERCONDUCTORS [J].
ANDERSON, PW .
PHYSICAL REVIEW LETTERS, 1959, 3 (07) :325-326
[3]   ANISOTROPIC SUPERFLUIDITY IN HE-3 - POSSIBLE INTERPRETATION OF ITS STABILITY AS A SPIN-FLUCTUATION EFFECT [J].
ANDERSON, PW ;
BRINKMAN, WF .
PHYSICAL REVIEW LETTERS, 1973, 30 (22) :1108-1111
[4]   Spin-triplet superconductivity in Sr2RuO4 identified by 17O Knight shift [J].
Ishida, K ;
Mukuda, H ;
Kitaoka, Y ;
Asayama, K ;
Mao, ZQ ;
Mori, Y ;
Maeno, Y .
NATURE, 1998, 396 (6712) :658-660
[5]   NMR relaxation rate in the superconducting state of the organic conductor kappa-(BEDT-TTF)(2)Cu[N(CN)(2)]Br [J].
Kanoda, K ;
Miyagawa, K ;
Kawamoto, A ;
Nakazawa, Y .
PHYSICAL REVIEW B, 1996, 54 (01) :76-79
[6]   Time-reversal symmetry breaking superconductivity in Sr2RuO4 [J].
Luke, GM ;
Fudamoto, Y ;
Kojima, KM ;
Larkin, MI ;
Merrin, J ;
Nachumi, B ;
Uemura, YJ ;
Maeno, Y ;
Mao, ZQ ;
Mori, Y ;
Nakamura, H ;
Sigrist, M .
NATURE, 1998, 394 (6693) :558-561
[7]   Enhancement of superconductivity of Sr2RuO4 to 3 K by embedded metallic microdomains [J].
Maeno, Y ;
Ando, T ;
Mori, Y ;
Ohmichi, E ;
Ikeda, S ;
NishiZaki, S ;
Nakatsuji, S .
PHYSICAL REVIEW LETTERS, 1998, 81 (17) :3765-3768
[8]   SUPERCONDUCTIVITY IN A LAYERED PEROVSKITE WITHOUT COPPER [J].
MAENO, Y ;
HASHIMOTO, H ;
YOSHIDA, K ;
NISHIZAKI, S ;
FUJITA, T ;
BEDNORZ, JG ;
LICHTENBERG, F .
NATURE, 1994, 372 (6506) :532-534
[9]   Novel character of spin fluctuations in spin-triplet superconductor Sr2RuO4:: 17O-NMR study [J].
Mukuda, H ;
Ishida, K ;
Kitaoka, Y ;
Asayama, K ;
Mao, ZQ ;
Mori, Y ;
Maeno, Y .
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1998, 67 (11) :3945-3951
[10]   SR2RUO4 - AN ELECTRONIC ANALOG OF HE-3 [J].
RICE, TM ;
SIGRIST, M .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, 7 (47) :L643-L648