POSITRON-ANNIHILATION STUDIES OF THE IRON-SUBSTITUTED OXIDE SUPERCONDUCTOR YBA2(CU1-XFEX)3O7-Y

被引：9

作者：

ISHIBASHI, S

SUENAGA, K

YAMAMOTO, R

DOYAMA, M

MATSUMOTO, T

机构：

[1] NISHI TOKYO UNIV,DEPT MAT ENGN,YAMANASHI,JAPAN

[2] NATL RES INST MET,MEGURO KU,TOKYO 153,JAPAN

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 15期

关键词：

D O I：

10.1088/0953-8984/2/15/025

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Positron lifetime measurements were performed on YBa2(Cu 1-xFex)3O7-y with x=0, 0.01, 0.02, 0.03, 0.06, 0.09 and 0.12 as a function of temperature between 20 K and room temperature. The positron mean lifetime and its thermal behaviour strongly depend on the iron concentration. A plausible model is proposed, in which the observed results are explained in terms of positron weak localisation due to copper-oxygen chain disordering.

引用

页码：3691 / 3696

页数：6

共 36 条

[1]

[Anonymous], 1983, POSITRON SOLID STATE

[2] POSITRON-ANNIHILATION STUDY ON Y-BA-CU-O HIGH-TC SUPERCONDUCTORS [J].

BALOGH, AG ;

PUFF, W ;

LISZKAY, L ;

MOLNAR, B .

PHYSICAL REVIEW B, 1988, 38 (04) :2883-2885

[3] 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

[4] A STUDY OF POSITRON DISTRIBUTION AND ANNIHILATION CHARACTERISTICS IN YBA2CU3O7-X [J].

BHARATHI, A ;

SUNDAR, CS ;

HARIHARAN, Y .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (08) :1467-1474

[5] INHIBITION OF POSITRON TRAPPING BY CHARGE-TRANSFER IN CERAMIC SUPERCONDUCTORS [J].

BRUSA, RS ;

GRISENTI, R ;

LIU, S ;

OSS, S ;

PILLA, O ;

ZECCA, A ;

DUPASQUIER, A ;

MATACOTTA, FA .

PHYSICA C, 1988, 156 (01) :65-68

[6] POSITRON-ANNIHILATION AT DEFECTS IN SINTERED HIGH-TC PEROVSKITE SUPERCONDUCTORS [J].

CORBEL, C ;

BERNEDE, P ;

PASCARD, H ;

RULLIERALBENQUE, F ;

KORMAN, R ;

MARUCCO, JF .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1989, 48 (04) :335-341

[7] SPECULATIONS ON THE BEHAVIOR OF POSITRONS IN SUPERCONDUCTORS [J].

DRESDEN, M .

PHYSICAL REVIEW, 1954, 93 (06) :1413-1414

[8] LIFETIME OF POSITRONS IN SUPERCONDUCTING LEAD [J].

GREEN, B ;

MADANSKY, L .

PHYSICAL REVIEW, 1956, 102 (04) :1014-1015

[9]

Hautojarvi P., 1979, POSITRONS SOLIDS

[10] MICRODOMAIN STRUCTURE IN YBA2(CU1-XFEX)3O7-Y OBSERVED BY ELECTRON-MICROSCOPY [J].

HIROI, Z ;

TAKANO, M ;

TAKEDA, Y ;

KANNO, R ;

BANDO, Y .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (04) :L580-L583

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