CU NMR AND NQR STUDIES OF IMPURITIES-DOPED YBA2(CU1-XMX)3O7 (M = ZN AND NI)

被引：253

作者：

ISHIDA, K ^{[1
]}

KITAOKA, Y ^{[1
]}

OGATA, N ^{[1
]}

KAMINO, T ^{[1
]}

ASAYAMA, K ^{[1
]}

COOPER, JR ^{[1
]}

ATHANASSOPOULOU, N ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, IRC SUPERCOND, CAMBRIDGE CB3 0HE, ENGLAND

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1993年 / 62卷 / 08期

关键词：

D O I：

10.1143/JPSJ.62.2803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The normal and superconducting properties in impurity-doped YBa2(Cu1-xMx)3 O7 (M=Zn and Ni) have been investigated by Cu-63 NMR and NQR techniques. The nonmagnetic Zn-doping into the CuO2 plane in YBa2Cu3O7(YBCO7) causes a local collapse of antiferromagnetic (AF) spin correlation near Zn impurities and induces a gapless superconductivity with a finite density of states at the Fermi surface. On the other hand, in the case of Ni doping, there is no appreciable modification except for a small decrease of T(c), although the Ni spins behave actually as local moments. The gapless feature iri Zn-doped YBCO7 is shown to be consistently interpreted within the framework of the d-wave model with gap zeros of lines at the Fermi surface as argued in heavy fermion superconductors. It is pointed out that the AF spin fluctuation-induced superconductivity is applicable to high-T(c) cuprates.

引用

页码：2803 / 2818

页数：16

共 37 条

[1]

Abrikosov A A, 1960, ZH EKSP TEOR FIZ, V39, P1781

[2] Y-89 NMR EVIDENCE FOR A FERMI-LIQUID BEHAVIOR IN YBA2CU3O6+X [J].

ALLOUL, H ;

OHNO, T ;

MENDELS, P .

PHYSICAL REVIEW LETTERS, 1989, 63 (16) :1700-1703

[3] CORRELATIONS BETWEEN MAGNETIC AND SUPERCONDUCTING PROPERTIES OF ZN-SUBSTITUTED YBA2CU3O6+X [J].

ALLOUL, H ;

MENDELS, P ;

CASALTA, H ;

MARUCCO, JF ;

ARABSKI, J .

PHYSICAL REVIEW LETTERS, 1991, 67 (22) :3140-3143

[4] KNIGHT SHIFT IN SUPERCONDUCTORS [J].

ANDERSON, PW .

PHYSICAL REVIEW LETTERS, 1959, 3 (07) :325-326

[5] CU-63 KNIGHT-SHIFTS IN THE SUPERCONDUCTING STATE OF YBA2CU3O7-DELTA(TC=90-K) [J].

BARRETT, SE ;

DURAND, DJ ;

PENNINGTON, CH ;

SLICHTER, CP ;

FRIEDMANN, TA ;

RICE, JP ;

GINSBERG, DM .

PHYSICAL REVIEW B, 1990, 41 (10) :6283-6296

[6]

COOPER JR, 1991, SUPERCONDUCTING SCI, V4, P181

[7] A Y-89 NMR-STUDY OF SUBSTITUTION FOR COPPER IN YBA2(CU1-XMX)3O7 [J].

DUPREE, R ;

GENCTEN, A ;

PAUL, DM .

PHYSICA C, 1992, 193 (1-2) :81-89

[8] NMR AND NQR STUDIES OF SUPERCONDUCTIVITY IN HEAVILY DOPED TL2BA2CUO6+Y WITH A SINGLE CUO2 PLANE [J].

FUJIWARA, K ;

KITAOKA, Y ;

ISHIDA, K ;

ASAYAMA, K ;

SHIMAKAWA, Y ;

MANAKO, T ;

KUBO, Y .

PHYSICA C, 1991, 184 (4-6) :207-219

[9] RESONANT IMPURITY SCATTERING IN HEAVY FERMION SUPERCONDUCTORS [J].

HIRSCHFELD, P ;

VOLLHARDT, D ;

WOLFLE, P .

SOLID STATE COMMUNICATIONS, 1986, 59 (03) :111-115

[10] CONSEQUENCES OF RESONANT IMPURITY SCATTERING IN ANISOTROPIC SUPERCONDUCTORS - THERMAL AND SPIN RELAXATION PROPERTIES [J].

HIRSCHFELD, PJ ;

WOLFLE, P ;

EINZEL, D .

PHYSICAL REVIEW B, 1988, 37 (01) :83-97

← 1 2 3 4 →