PERPENDICULAR MAGNETORESISTANCE IN MAGNETIC MULTILAYERS - THEORETICAL-MODEL AND DISCUSSION

被引:34
作者
FERT, A
VALET, T
BARNAS, J
机构
[1] THOMSON CSF,CENT RECH LAB,F-91404 ORSAY,FRANCE
[2] AM UNIV,INST PHYS,PL-60769 POZNAN,POLAND
关键词
D O I
10.1063/1.356868
中图分类号
O59 [应用物理学];
学科分类号
摘要
After a general introduction describing the mechanisms of the current perpendicular to the layer plane magnetoresistance (CPP-MR), a microscopic model based on the Boltzmann equation is presented and a general expression of the magnetoresistance is derived in which the spin diffusion length appears as the unique scaling length of the problem. In the limit where the spin diffusion lengths are much larger than the layer thicknesses, the expression of the CPP-MR becomes very simple and similar to that already used at Michigan State University for the analysis of experimental results. Out of this limit, the model predicts a dramatic reduction of the CPP-MR if the spin diffusion lengths are shortened sufficiently by paramagnetic impurities or spin-orbit scatterers. Finally, a calculation is presented of the spin-dependent interface resistances involved in the model and related to interface potential steps, and experimental data are compared.
引用
收藏
页码:6693 / 6698
页数:6
相关论文
共 27 条
  • [1] AFET Y, 1968, J APPL PHYS, V39, P85
  • [2] GIANT MAGNETORESISTANCE OF (001)FE/(001) CR MAGNETIC SUPERLATTICES
    BAIBICH, MN
    BROTO, JM
    FERT, A
    VANDAU, FN
    PETROFF, F
    EITENNE, P
    CREUZET, G
    FRIEDERICH, A
    CHAZELAS, J
    [J]. PHYSICAL REVIEW LETTERS, 1988, 61 (21) : 2472 - 2475
  • [3] BARNAS J, UNPUB
  • [4] BASS J, 1994, J APPL PHYS, V75
  • [5] PERPENDICULAR TRANSPORT THROUGH MAGNETIC MULTILAYERS
    BAUER, GEW
    [J]. PHYSICAL REVIEW LETTERS, 1992, 69 (11) : 1676 - 1679
  • [6] ENHANCED MAGNETORESISTANCE IN LAYERED MAGNETIC-STRUCTURES WITH ANTIFERROMAGNETIC INTERLAYER EXCHANGE
    BINASCH, G
    GRUNBERG, P
    SAURENBACH, F
    ZINN, W
    [J]. PHYSICAL REVIEW B, 1989, 39 (07): : 4828 - 4830
  • [7] BUTTIKER M, 1985, PHYS REV B, V31, P6027
  • [8] MAGNETORESISTANCE OF MULTILAYERED STRUCTURES FOR CURRENTS PERPENDICULAR TO THE PLANE OF THE LAYERS
    CAMBLONG, HE
    ZHANG, SF
    LEVY, PM
    [J]. PHYSICAL REVIEW B, 1993, 47 (08): : 4735 - 4741
  • [9] THEORY OF GIANT MAGNETORESISTANCE EFFECTS IN MAGNETIC LAYERED STRUCTURES WITH ANTIFERROMAGNETIC COUPLING
    CAMLEY, RE
    BARNAS, J
    [J]. PHYSICAL REVIEW LETTERS, 1989, 63 (06) : 664 - 667
  • [10] CAMPBELL IA, 1982, FERROMAGNETIC MATERI, V3, P769