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
收藏
页码：3691 / 3696
页数：6
相关论文
共 36 条
  • [1] [Anonymous], 1983, POSITRON SOLID STATE
  • [2] POSITRON-ANNIHILATION STUDY ON Y-BA-CU-O HIGH-TC SUPERCONDUCTORS
    BALOGH, AG
    PUFF, W
    LISZKAY, L
    MOLNAR, B
    [J]. PHYSICAL REVIEW B, 1988, 38 (04): : 2883 - 2885
  • [3] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM
    BEDNORZ, JG
    MULLER, KA
    [J]. ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02): : 189 - 193
  • [4] A STUDY OF POSITRON DISTRIBUTION AND ANNIHILATION CHARACTERISTICS IN YBA2CU3O7-X
    BHARATHI, A
    SUNDAR, CS
    HARIHARAN, Y
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 1989, 1 (08) : 1467 - 1474
  • [5] INHIBITION OF POSITRON TRAPPING BY CHARGE-TRANSFER IN CERAMIC SUPERCONDUCTORS
    BRUSA, RS
    GRISENTI, R
    LIU, S
    OSS, S
    PILLA, O
    ZECCA, A
    DUPASQUIER, A
    MATACOTTA, FA
    [J]. PHYSICA C, 1988, 156 (01): : 65 - 68
  • [6] POSITRON-ANNIHILATION AT DEFECTS IN SINTERED HIGH-TC PEROVSKITE SUPERCONDUCTORS
    CORBEL, C
    BERNEDE, P
    PASCARD, H
    RULLIERALBENQUE, F
    KORMAN, R
    MARUCCO, JF
    [J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1989, 48 (04): : 335 - 341
  • [7] SPECULATIONS ON THE BEHAVIOR OF POSITRONS IN SUPERCONDUCTORS
    DRESDEN, M
    [J]. PHYSICAL REVIEW, 1954, 93 (06): : 1413 - 1414
  • [8] LIFETIME OF POSITRONS IN SUPERCONDUCTING LEAD
    GREEN, B
    MADANSKY, L
    [J]. 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
    HIROI, Z
    TAKANO, M
    TAKEDA, Y
    KANNO, R
    BANDO, Y
    [J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (04): : L580 - L583
1234