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Physical Review Letters
Volumn 70, Issue 21, 1993, Pages 3343-3346
Perpendicular giant magnetoresistance of microstructured Fe/Cr magnetic multilayers from 4.2 to 300 K
Author keywords

[No Author keywords available]
Indexed keywords

EID: 12044259238     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.70.3343     Document Type: Article
Times cited : (290)
References (21)
  • 12
    • 84927507546 scopus 로고    scopus 로고
    • In an improved experimental setup of the Michigan State University group, it is now possible to use fields of several 1000 kA/m [P. Schroeder (private communication)].
  • 16
    • 84927501828 scopus 로고    scopus 로고
    • We define the MR as (Rmax-Rsat)/ Rsat, where Rmax is the maximum resistance at zero field and Rsat the resistance value at saturation of the giant MR effect.
  • 20
    • 84927464920 scopus 로고    scopus 로고
    • The resistance of the multilayer is of the same order of magnitude as the contact resistance, which is determined by comparing different multilayer thicknesses. Also the pillar height is relatively small compared to the width w, which gives rise to a nonuniform current distribution in the pillar. Ohm's law gives for our geometry (see inset of Fig. 1) that (V+-V-) w2 propto ( w/L )/ sinh ( w/L) with L typically 2 3 μm. This dependence was checked independently by simulations based on the finite element method. Quoted MR values are extrapolations for w → 0 and typically are a factor 1.1 1.2 higher than the actual measured value for the smallest pillar in each series.
  • 21
    • 84927474311 scopus 로고    scopus 로고
    • This is in good agreement with the result of the comparison of our CPP MR data with the Bauer model (Ref. 7), from which we find for the ratio of the scattering lengths, averaged on bulk and interface scattering, that l downarrow / l uparrow = 6.4; see G.E.W. Bauer, M.A.M. Gijs, S.K.J. Lenczowski, and J.B. Giesbers (to be published).

* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.