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
  • [41] MAGNETORESISTANCE IN THE VARIABLE-RANGE-HOPPING CONDUCTION REGIME IN N-TYPE CUINSE2
    WASIM, SM
    ESSALEH, L
    GALIBERT, J
    LEOTIN, J
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1993, 32 : 453 - 455
  • [42] Variable-range hopping conductivity in quasicrystals
    Rivier, N
    Durand, M
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2000, 294 : 584 - 587
  • [43] Variable-Range-Hopping Conductivity in Quasicrystals
    Vekilov, Yu. Kh.
    Chernikov, M. A.
    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2011, 67 : C145 - C145
  • [44] Variable-range hopping conductivity in InGaN
    Yildiz, A.
    Kasap, M.
    SIX INTERNATIONAL CONFERENCE OF THE BALKAN PHYSICAL UNION, 2007, 899 : 293 - +
  • [45] Variable-Range Hopping Conductivity in Quantum Hall Regime for HgTe-Based Heterostructure
    Arapov, Yu. G.
    Gudina, S. V.
    Neverov, V. N.
    Podgornykh, S. M.
    Popov, M. R.
    Harus, G. I.
    Shelushinina, N. G.
    Yakunin, M. V.
    Dvoretsky, S. A.
    Mikhailov, N. N.
    JOURNAL OF LOW TEMPERATURE PHYSICS, 2016, 185 (5-6) : 665 - 672
  • [46] Variable-Range Hopping Conductivity in Quantum Hall Regime for HgTe-Based Heterostructure
    Yu. G. Arapov
    S. V. Gudina
    V. N. Neverov
    S. M. Podgornykh
    M. R. Popov
    G. I. Harus
    N. G. Shelushinina
    M. V. Yakunin
    S. A. Dvoretsky
    N. N. Mikhailov
    Journal of Low Temperature Physics, 2016, 185 : 665 - 672
  • [47] Anomalous Hall effect and ordinary Hall effect in variable range hopping regime of inhomogeneous ferromagnetic semiconductor
    Zhou, Tie
    Qiao, Ruimin
    Xu, Tongshuai
    Cao, Qiang
    Lü, Weiming
    Tian, Yufeng
    Bai, Lihui
    Yang, Wanli
    Yan, Shishen
    Journal of Magnetism and Magnetic Materials, 2022, 562
  • [48] Anomalous Hall effect and ordinary Hall effect in variable range hopping regime of inhomogeneous ferromagnetic semiconductor
    Zhou, Tie
    Qiao, Ruimin
    Xu, Tongshuai
    Cao, Qiang
    Lu, Weiming
    Tian, Yufeng
    Bai, Lihui
    Yang, Wanli
    Yan, Shishen
    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2022, 562
  • [49] ORBITAL MAGNETOCONDUCTANCE IN THE VARIABLE-RANGE-HOPPING REGIME
    ENTINWOHLMAN, O
    IMRY, Y
    SIVAN, U
    PHYSICAL REVIEW B, 1989, 40 (12): : 8342 - 8348
  • [50] ORBITAL MAGNETOCONDUCTANCE IN THE VARIABLE-RANGE-HOPPING REGIME
    SIVAN, U
    ENTINWOHLMAN, O
    IMRY, Y
    PHYSICAL REVIEW LETTERS, 1988, 60 (15) : 1566 - 1569
12345