LOCATION OF THE ROOT OF SUPERCONDUCTIVITY IN LA2-BETA-SR-BETA-CUOX AND ND2-ZCEZCUOX

被引：21

作者：

BLACKSTEAD, HA ^{[1
]}

DOW, JD ^{[1
]}

机构：

[1] ARIZONA STATE UNIV,DEPT PHYS & ASTRON,TEMPE,AZ 85287

来源：

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES | 1995年 / 72卷 / 05期

关键词：

D O I：

10.1080/13642819508239103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using pair breaking by Cu-site magnetic impurities as a probe, we demonstrate that the root of superconductivity is located in the 'charge reservoir' regions of La2-betaSrbetaCuOx and Nd2-zCezCuOx (with x approximate to 4), namely in the regions occupied by interstitial dopant oxygen, and not in the cuprate planes. The fractional changes in T-c induced by non-magnetic impurities in both materials are the same, indicating that Nd2-zCezCuOx, like La2-betaSrbetaCuOx, is a hole superconductor.

引用

页码：529 / 534

页数：6

共 18 条

[1]

Abrikosov A., 1960, ZH EKSP TEOR FIZ, V39, p[1781, 1243]

[2]

BLACKSTEAD HA, 1994, JETP LETT+, V59, P283

[3] ROLE OF BA-SITE PR IN QUENCHING SUPERCONDUCTIVITY OF Y1-YPRYBA2CU3OX AND RELATED MATERIALS [J].

BLACKSTEAD, HA ;

DOW, JD .

PHYSICAL REVIEW B, 1995, 51 (17) :11830-11837

[4]

BLACKSTEAD HA, 1995, P SOC PHOTO-OPT INS, V2397, P617, DOI 10.1117/12.206908

[5]

BLACKSTEAD HA, 1995, IN PRESS SOLID STATE

[6] SUPERCONDUCTIVITY OF RARE EARTH-BARIUM-COPPER OXIDES [J].

FISK, Z ;

THOMPSON, JD ;

ZIRNGIEBL, E ;

SMITH, JL ;

CHEONG, SW .

SOLID STATE COMMUNICATIONS, 1987, 62 (11) :743-744

[7]

HINKS DG, 1988, MATER RES SOC S P, V99, P9

[8] SUPERCONDUCTIVITY ABOVE 90 K IN THE SQUARE-PLANAR COMPOUND SYSTEM ABA2CU3O6+X WITH A = Y, LA, ND, SM, EU, GD, HO, ER, AND LU [J].

HOR, PH ;

MENG, RL ;

WANG, YQ ;

GAO, L ;

HUANG, ZJ ;

BECHTOLD, J ;

FORSTER, K ;

CHU, CW .

PHYSICAL REVIEW LETTERS, 1987, 58 (18) :1891-1894

[9] UNUSUAL PROPERTIES OF ND1.85CE0.15CUO4+/-DELTA WITH VARYING OXYGEN CONCENTRATION [J].

JIANG, W ;

MAO, SN ;

XI, XX ;

JIANG, XG ;

PENG, JL ;

VENKATESAN, T ;

LOBB, CJ ;

GREENE, RL .

PHYSICA C, 1994, 235 :1403-1404

[10]

JORGENSEN JD, 1991, PHYS TODAY JUN, P34

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