DIMENSIONALITY OF LOCALIZATION IN NONSUPERCONDUCTING BI2+XSR2-YCUO6+/-DELTA-CRYSTALS

被引：55

作者：

FIORY, AT

MARTIN, S

FLEMING, RM

SCHNEEMEYER, LF

WASZCZAK, JV

机构：

[1] AT and T Bell Laboratories, Murray Hill

来源：

PHYSICAL REVIEW B | 1990年 / 41卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.41.2627

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transport, magnetoconductivity, and tunneling were measured in nonsuperconducting Bi2+xSr2-yCuO6 single crystals (x,y0.2), which show two-dimensional localization within the CuO2 planes. The weakening of disorder in the planes is found to be by itself insufficient for superconductivity. Negative magnetoconductivity, evidence for the onset of superconductive pairing, is observed when transport perpendicular to the planes indicates extended states in three dimensions. © 1990 The American Physical Society.

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页码：2627 / 2630

页数：4

相关论文

共 34 条

[1] QUASIPARTICLE LIFETIME IN DISORDERED TWO-DIMENSIONAL METALS [J].

ABRAHAMS, E ;

ANDERSON, PW ;

LEE, PA ;

RAMAKRISHNAN, TV .

PHYSICAL REVIEW B, 1981, 24 (12) :6783-6789

[2] SUPERCONDUCTIVITY IN THE BI-SR-CU-O SYSTEM [J].

AKIMITSU, J ;

YAMAZAKI, A ;

SAWA, H ;

FUJIKI, H .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1987, 26 (12) :L2080-L2081

[3] EFFECTS OF ELECTRON-ELECTRON COLLISIONS WITH SMALL ENERGY TRANSFERS ON QUANTUM LOCALIZATION [J].

ALTSHULER, BL ;

ARONOV, AG ;

KHMELNITSKY, DE .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1982, 15 (36) :7367-7386

[4] NORMAL TUNNELING AND NORMAL TRANSPORT - DIAGNOSTICS FOR THE RESONATING-VALENCE-BOND STATE [J].

ANDERSON, PW ;

ZOU, Z .

PHYSICAL REVIEW LETTERS, 1988, 60 (02) :132-135

[5] ZEEMAN EFFECT ON MAGNETORESISTANCE IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

ARONOV, AG ;

HIKAMI, S ;

LARKIN, AI .

PHYSICAL REVIEW LETTERS, 1989, 62 (08) :965-968

[6] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[7] MAGNETOCONDUCTANCE OF THIN-FILM SUPERCONDUCTORS NEAR CRITICAL DISORDER [J].

BRENIG, W ;

PAALANEN, MA ;

HEBARD, AF ;

WOLFLE, P .

PHYSICAL REVIEW B, 1986, 33 (03) :1691-1699

[8] STRUCTURAL ANOMALIES AT THE DISAPPEARANCE OF SUPERCONDUCTIVITY IN BA2YCU3O7-DELTA - EVIDENCE FOR CHARGE-TRANSFER FROM CHAINS TO PLANES [J].

CAVA, RJ ;

BATLOGG, B ;

RABE, KM ;

RIETMAN, EA ;

GALLAGHER, PK ;

RUPP, LW .

PHYSICA C, 1988, 156 (04) :523-527

[9] PAIR BREAKING PARAMETER OF TWO-DIMENSIONAL DIRTY SUPERCONDUCTORS [J].

EBISAWA, H ;

MAEKAWA, S ;

FUKUYAMA, H .

SOLID STATE COMMUNICATIONS, 1983, 45 (02) :75-78

[10] ENERGY GAPS IN BI-SR-CA-CU-O AND BI-SR-CU-O SYSTEMS BY ELECTRON-TUNNELING [J].

EKINO, T ;

AKIMITSU, J .

PHYSICAL REVIEW B, 1989, 40 (10) :6902-6911

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