VARIABLE-RANGE-HOPPING AND POSITIVE MAGNETORESISTANCE IN INSULATING Y1-XPRXBA2CU3O7 CRYSTALS

被引：36
作者：
JIANG, W
PENG, JL
HAMILTON, JJ
GREENE, RL
机构：
[1] Center for Superconductivity Research, Department of Physics, University of Maryland, College Park
来源：
PHYSICAL REVIEW B | 1994年 / 49卷 / 01期
关键词：
D O I：
10.1103/PhysRevB.49.690
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have measured in-plane resistivity and magnetoresistance of insulating Y1-xPrxBa2Cu3O7 (x approximately 0.63) crystals in magnetic fields up to 8 T. Mott variable-range-hopping transport rho=rho0 exp{(T0/T)alpha} has been observed with alpha=1/4 at low temperatures suggesting the metal-insulator transition caused by Pr doping is due to carrier localization. The magnetoresistance in the Mott variable-range-hopping regime is found to be positive and anisotropic, which may be caused by a decrease of the localiztion length induced by the magnetic field.
引用
收藏
页码：690 / 693
页数：4
相关论文
共 50 条
  • [31] XAFS and XANES study of structural and electronic changes in Y1-xPrxBa2Cu3O7
    Univ of Rajasthan, Jaipur, India
    J Phy IV JP, 2 (C2-1121-1122):
  • [32] Copper NMR and hole depletion in the normal state of Y1-xPrxBa2Cu3O7
    MacLaughlin, D.E., 1600, (171): : 1 - 4
  • [33] POSITIVE AND NEGATIVE MAGNETORESISTANCE IN THE VARIABLE-RANGE-HOPPING REGIME OF DOPED SEMICONDUCTORS
    BISKUPSKI, G
    PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1992, 65 (04): : 723 - 728
  • [34] A CORE AND VALENCE LEVEL PHOTOEMISSION-STUDY OF Y1-XPRXBA2CU3O7
    COHEN, O
    POTTER, FH
    RASTOMJEE, CS
    EGDELL, RG
    PHYSICA C, 1992, 201 (1-2): : 58 - 68
  • [35] Physical properties of the series of oxides Y1-xPrxBa2Cu3O7δ (0<x<1)
    Goncalves, Antonio P.
    Santos, Isabel C.
    Lopes, Elsa B.
    Henriques, Rui T.
    Almeida, Manuel
    Figueiredo, Ondina
    Alves, Jorge M.
    Godinho, Margarida
    Physica C: Superconductivity and its Applications, 1988, 153-55 (01): : 910 - 911
  • [36] SIZE EFFECT ON VARIABLE-RANGE-HOPPING TRANSPORT IN PRBA2CU3O7-X
    KABASAWA, U
    TARUTANI, Y
    OKAMOTO, M
    FUKAZAWA, T
    TSUKAMOTO, A
    HIRATANI, M
    TAKAGI, K
    PHYSICAL REVIEW LETTERS, 1993, 70 (11) : 1700 - 1703
  • [37] Y1－xPrxBa2Cu3O7系统的低温电子比热的研究
    宋永伟，周晖，王玉鹏，雒建林，陈彤蔡晓航，范小波，冉启泽，金锋，赵忠贤
    低温物理学报, 1995, (01) : 57 - 62
  • [38] DEPRESSION OF SUPERCONDUCTIVITY, HEAVY FERMION BEHAVIOR AND VALENCE FLUCTUATIONS IN Y1-XPRXBA2CU3O7
    JEE, CS
    KEBEDE, A
    NICHOLS, D
    CROW, JE
    MIHALISIN, T
    MYER, GH
    PEREZ, I
    SALOMON, RE
    SCHLOTTMANN, P
    SOLID STATE COMMUNICATIONS, 1989, 69 (04) : 379 - 384
  • [39] ANOMALOUS BEHAVIOR OF THE COMPLEX CONDUCTIVITY OF Y1-XPRXBA2CU3O7 OBSERVED WITH THZ SPECTROSCOPY
    BUHLEIER, R
    BRORSON, SD
    TROFIMOV, IE
    WHITE, JO
    HABERMEIER, HU
    KUHL, J
    PHYSICAL REVIEW B, 1994, 50 (13): : 9672 - 9675
  • [40] X-ray spectroscopic study of the electronic structure of Y1-xPrxBa2Cu3O7
    Yamaoka, H.
    Oohashi, H.
    Jarrige, I.
    Terashima, T.
    Zou, Y.
    Mizota, H.
    Sakakura, S.
    Tochio, T.
    Ito, Y.
    Sherman, E. Ya.
    Kotani, A.
    PHYSICAL REVIEW B, 2008, 77 (04)
12345