Giant magnetoresistance for ensembles of ferromagnetic granules in variable range hopping conductivity regime

被引：2
|
作者：
Kozub, V. I. [1 ]
Shumilin, A. V. [1 ]
机构：
[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
来源：
SOLID STATE COMMUNICATIONS | 2013年 / 171卷
关键词：
Granular metals; Hopping conductivity; Magnetoresistance; METAL;
D O I：
10.1016/j.ssc.2013.07.031
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study an effect of moderate magnetic field on variable range hopping conductivity in arrays of ferromagnetic granules separated by tunnel barriers. It is shown that the resulting magnetoresistance can be significantly larger than the standard "giant" magnetoresistance in Fe-N-Fe-N ... multilayers. The effect is related to a gain in densities of states available for the virtual processes within the intermediate granules due to magnetic-field induced alignment of the granule magnetizations. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：55 / 58
页数：4
相关论文
共 50 条
  • [21] VARIABLE-RANGE-HOPPING MAGNETORESISTANCE IN CDSE
    FINLAYSON, DM
    JOURNAL OF PHYSICS-CONDENSED MATTER, 1994, 6 (40) : 8277 - 8283
  • [22] Variable range hopping conductivity and negative magnetoresistance in n-type InP semiconductor
    Abdia, R.
    El Kaaouachi, A.
    Nafidi, A.
    Biskupski, G.
    Hemine, J.
    SOLID-STATE ELECTRONICS, 2009, 53 (05) : 469 - 472
  • [23] MAGNETORESISTANCE IN GEAU THIN-FILMS EXHIBITING VARIABLE-RANGE-HOPPING CONDUCTIVITY
    WANG, XX
    MARTOFF, CJ
    LIN, CL
    KACZANOWICZ, E
    PHYSICAL REVIEW B, 1995, 52 (05): : 3429 - 3434
  • [24] Variable range hopping conductivity in manganites
    Vekilov, Yu. Kh.
    Mukovskii, Ya. M.
    SOLID STATE COMMUNICATIONS, 2012, 152 (13) : 1139 - 1141
  • [25] Variable range hopping conductivity in quasicrystals
    Vekilov, YK
    Isaev, EI
    FERROELECTRICS, 2001, 250 (1-4) : 343 - 345
  • [26] Negative magnetoresistance in Dirac semimetal Cd3As2 in the variable range hopping regime
    Limouny, L.
    Dlimi, S.
    El Kaaouachi, A.
    BULLETIN OF MATERIALS SCIENCE, 2021, 44 (03)
  • [27] Negative magnetoresistance in Dirac semimetal Cd3As2 in the variable range hopping regime
    L Limouny
    S Dlimi
    A El Kaaouachi
    Bulletin of Materials Science, 2021, 44
  • [28] Separating positive and negative magnetoresistance for polyaniline-silicon nanocomposites in variable range hopping regime
    Gu, Hongbo
    Guo, Jiang
    Sadu, Rakesh
    Huang, Yudong
    Haldolaarachchige, Neel
    Chen, Daniel
    Young, David P.
    Wei, Suying
    Guo, Zhanhu
    APPLIED PHYSICS LETTERS, 2013, 102 (21)
  • [29] ACOUSTOELECTRIC EFFECT IN SYSTEMS WITH LOCALIZED STATES AT VARIABLE-RANGE HOPPING CONDUCTIVITY REGIME
    BOKACHEVA, LS
    GALPERIN, YM
    SOVIET PHYSICS SEMICONDUCTORS-USSR, 1992, 26 (11): : 1127 - 1128
  • [30] VARIABLE-RANGE-HOPPING AS THE MECHANISM OF THE CONDUCTIVITY PEAK BROADENING IN THE QUANTUM HALL REGIME
    POLYAKOV, DG
    SHKLOVSKII, BI
    PHYSICAL REVIEW LETTERS, 1993, 70 (24) : 3796 - 3799
12345