COMPARISON OF HALL-EFFECT NEAR TC IN YBCO 123 SINGLE-CRYSTAL AND 124 CERAMICS

被引:18
作者
AFFRONTE, M [1 ]
DECROUX, M [1 ]
SADOWSKI, W [1 ]
GRAF, T [1 ]
FISCHER, O [1 ]
机构
[1] ECOLE POLYTECH FED LAUSANNE,IMO,DEPT PHYS,CH-1015 LAUSANNE,SWITZERLAND
来源
PHYSICA C | 1990年 / 172卷 / 1-2期
关键词
D O I
10.1016/0921-4534(90)90651-T
中图分类号
O59 [应用物理学];
学科分类号
摘要
We have measured the Hall voltage V(H) as a function of temperature and magnetic field B (up to 6 T) near T(c) in Y1Ba2Cu3O7-delta-("123") single crystal and in Y1Ba2Cu4O8 ("124") ceramics. Near T(c), V(H) shows a sign reversal in the 123 crystal (B parallel to the c-axis) and the tangents to the V(H) versus B curves at 6 T do not cross the origin. These features are not observed in the 124 phase. The fact that a negative V(H) appears in the 123 phase and not in 124 seems to reflect different conditions for the flux flow dynamics in the two compounds. We also report measurements of the normal state Hall coefficient, R(H) obtained in single phase 124 ceramics. The very small value of R(H) (1.5 x 10(-10)m3/C for T > 140 K) is rather unusual in the superconducting oxide family.
引用
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页码:131 / 137
页数:7
相关论文
共 26 条
  • [1] THEORY OF MOTION OF VORTICES IN SUPERCONDUCTORS
    BARDEEN, J
    STEPHEN, MJ
    [J]. PHYSICAL REVIEW, 1965, 140 (4A): : 1197 - +
  • [2] CRITICAL CURRENT-DENSITY AND UPPER CRITICAL-FIELD FOR EPITAXIAL Y2BA4CU8O16 FILMS
    BUDHANI, RC
    RUCKMAN, MW
    SABATINI, RL
    SUENAGA, M
    WELCH, DO
    [J]. SOLID STATE COMMUNICATIONS, 1990, 73 (05) : 337 - 340
  • [3] FIELD-INDUCED BROADENING OF THE RESISTIVE TRANSITION AND 2-DIMENSIONAL NATURE OF FLUX PINNING IN Y2BA4CU8O16 FILMS
    BUDHANI, RC
    WELCH, DO
    SUENAGA, M
    SABATINI, RL
    [J]. PHYSICAL REVIEW LETTERS, 1990, 64 (14) : 1666 - 1669
  • [4] PROPERTIES OF Y-BA-CU-O THIN-FILMS WITH ORDERED DEFECT STRUCTURE - Y2BA4CU8O20-X
    CHAR, K
    LEE, M
    BARTON, RW
    MARSHALL, AF
    BOZOVIC, I
    HAMMOND, RH
    BEASLEY, MR
    GEBALLE, TH
    KAPITULNIK, A
    LADERMAN, SS
    [J]. PHYSICAL REVIEW B, 1988, 38 (01): : 834 - 837
  • [5] RESISTIVITY AND HALL EFFECT IN SUPERCONDUCTING NB
    FIORY, AT
    SERIN, B
    [J]. PHYSICAL REVIEW LETTERS, 1968, 21 (06) : 359 - &
  • [6] TRANSPORT IN THE SUPERCONDUCTING MIXED STATE OF BI2+XSR2-YCUO6+/-DELTA
    FIORY, AT
    PAALANEN, MA
    RUEL, RR
    SCHNEEMEYER, LF
    WASZCZAK, JV
    [J]. PHYSICAL REVIEW B, 1990, 41 (07): : 4805 - 4807
  • [7] FLUX-FLOW HALL-EFFECT IN YBA2CU9O7 AND BI2SR2CACU2O8 HIGH-TEMPERATURE SUPERCONDUCTORS
    FORRO, L
    HAMZIC, A
    [J]. SOLID STATE COMMUNICATIONS, 1989, 71 (12) : 1099 - 1103
  • [8] HALL-EFFECT OF BULK YBA2CU3O7-DELTA
    GALFFY, M
    ZIRNGIEBL, E
    [J]. SOLID STATE COMMUNICATIONS, 1988, 68 (10) : 929 - 933
  • [9] HAGEN SJ, IN PRESS PHYS REV B
  • [10] HUNDLEY MF, 1987, PHYS REV B, V635, P8800