CHARGE FLUCTUATIONS IN HOBA2CU3OX (6-LESS-THAN-X-LESS-THAN-7) AND HOBA2CU4O8 AS STUDIED BY INELASTIC NEUTRON-SCATTERING

被引：4
|
作者：
MESOT, J [1 ]
FURRER, A [1 ]
机构：
[1] ETH ZURICH,CH-5232 VILLIGEN,SWITZERLAND
来源：
PHYSICA C | 1994年 / 235卷
关键词：
D O I：
10.1016/0921-4534(94)92043-5
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The line shapes of the lowest crystalline-electric-field (CEF) excitations of Ho3+ in HoBa2Cu3Ox (6 less than or equal to x less than or equal to 7) and HoBa2Cu4O8 turn out to be highly asymmetric for all the superconducting samples, while they remain Gaussian for the non-superconducting ones. Since these asymmetries increase with increasing oxygen content x, we believe that they are related to the level of doping of the CuO2 planes. A CEF model including low-energy charge fluctuations of the type Cu+2O-2+delta <-> (CuO-2)-O-+2+delta in the superconducting planes is able to reproduce quantitatively the observed asymmetries.
引用
收藏
页码：1639 / 1640
页数：2
相关论文
共 50 条
  • [1] NEUTRON SPECTROSCOPIC STUDIES OF THE CRYSTAL-FIELD IN HOBA2CU3OX (6-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-7)
    STAUB, U
    MESOT, J
    GUILLAUME, M
    ALLENSPACH, P
    FURRER, A
    MUTKA, H
    BOWDEN, Z
    TAYLOR, A
    PHYSICAL REVIEW B, 1994, 50 (06): : 4068 - 4074
  • [2] KINETIC-PROPERTIES OF CERAMIC YBA2CU3OX AT VARIOUS OXYGEN CONCENTRATIONS (6-LESS-THAN-X-LESS-THAN-7)
    ZAVARITSKII, NV
    SAMOILOV, AV
    YURGENS, AA
    JETP LETTERS, 1988, 48 (04) : 242 - 245
  • [3] CRYSTAL-FIELD IN HOBA2CU3O7-DELTA DETERMINED BY INELASTIC NEUTRON-SCATTERING
    FURRER, A
    BRUESCH, P
    UNTERNAEHRER, P
    PHYSICA C, 1988, 153 : 164 - 165
  • [4] CRYSTALLINE ELECTRIC-FIELD IN HOBA2CU3O7-DELTA DETERMINED BY INELASTIC NEUTRON-SCATTERING
    FURRER, A
    BRUESCH, P
    UNTERNAHRER, P
    SOLID STATE COMMUNICATIONS, 1988, 67 (01) : 69 - 73
  • [5] SUBSTITUTION EFFECT OF FLUORINE ON HOBA2CU3O7-XFY (0.0-LESS-THAN-OR-EQUAL-TO-Y-LESS-THAN-OR-EQUAL-TO-0.5) SUPERCONDUCTORS
    PARK, JS
    KIM, SH
    KIM, HS
    CHO, SK
    KIM, KH
    BULLETIN OF THE KOREAN CHEMICAL SOCIETY, 1992, 13 (02) : 131 - 135
  • [6] MAGNETIC FLUCTUATIONS IN THE COMPOUNDS YBA2CU3O6+X (O-LESS-THAN-X-LESS-THAN-1)
    BRUCKEL, T
    NEUMANN, KU
    CAPELLMANN, H
    SCHARPF, O
    KEMMLERSACK, S
    KIEMEL, R
    SCHAFER, W
    JOURNAL DE PHYSIQUE, 1988, 49 (C-8): : 2155 - 2156
  • [7] NEUTRON SPECTROSCOPY IN RBA2CU3OX (R=HO, ER 6-LESS-THAN-X-LESS-THAN-OR-EQUAL-TO-7) COMPOUNDS
    FURRER, A
    MESOT, J
    STAUB, U
    FAUTH, F
    GUILLAUME, M
    JOURNAL OF ALLOYS AND COMPOUNDS, 1994, 207 : 138 - 145
  • [8] OXIDATION ENTHALPIES IN YBA2CU3OX (6 LESS-THAN-OR-EQUAL-TO X LESS-THAN-OR-EQUAL-TO 7)
    LAMPERT, ME
    MOCALA, K
    NAVROTSKY, A
    SOLID STATE IONICS, 1988, 26 (02) : 163 - 163
  • [9] NEUTRON-SPECTROSCOPIC STUDIES OF THE CRYSTAL-FIELD IN ERBA2CU3OX (6-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-7)
    MESOT, J
    ALLENSPACH, P
    STAUB, U
    FURRER, A
    MUTKA, H
    OSBORN, R
    TAYLOR, A
    PHYSICAL REVIEW B, 1993, 47 (10): : 6027 - 6036
  • [10] NEUTRON SPECTROSCOPY IN ERBA2CU3OX(6-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-7) AND PR(2-X)CE(X)CUO4-DELTA(0-LESS-THAN-OR-EQUAL-TO-X-LESS-THAN-OR-EQUAL-TO-0.2) - CHARGE-TRANSFER, CLUSTER FORMATION AND PERCOLATIVE SUPERCONDUCTIVITY
    ALLENSPACH, P
    FURRER, A
    FAUTH, F
    GUILLAUME, M
    HENGGELER, W
    MESOT, J
    ROSENKRANZ, S
    PHYSICA B, 1995, 213 : 78 - 80
12345