Influence of interfacial scattering and surface roughness on giant magnetoresistance in Fe/Cr trilayers using ab initio layer potentials

Pereiro, Manuel; Botana, Jorge; Baldomir, D.; Warda, K.; Wojtczak, L.; Man’kovsky, S.V.; Iglesias, Manuel; Pardo, Víctor; Arias, J.E.

doi:10.1016/j.jmmm.2004.11.482

Cited by 3 publications

(4 citation statements)

References 11 publications

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“…The last measurements reported in Ref. [40] and extensive comparative studies of the growth, structure, magnetization and magnetotransport in Fe/Cr superlattices show that the intrinsic GMR originates from interfacial scattering and is determined by the interface width [31]. This experimental fact confirms the results shown in Fig.…”

Section: Gmr Predictionssupporting

confidence: 81%

“…6 that the theoretical and experimental values remain in good agreement in the interval of d Fe ≥ 8 Å. Only the proper treatment and choice of the potential allows us to obtain the oscillatory behavior even in the semiclassical approach [31]. The important problem, which is up till now omitted in the literature, is the determination of the potential at the interface or even proper treatment of the interface.…”

Section: Gmr Predictionsmentioning

confidence: 84%

“…The last measurements reported in [40] and extensive comparative studies of the growth, structure, magnetization and magnetotransport in Fe/Cr superlattices show that the intrinsic GMR originates from interfacial scattering and is determined by the interface width [31]. This experimental fact confirms the results shown in figure 7 and our earlier conclusion that the interface should be treated physically not as an ideal plane but as a transition zone between different materials where we can observe a mixture of two compounds (interdiffusion) and where not only a significant change of the potential but also a different kind of magnetism take place [6].…”

Section: Gmr Predictionsmentioning

confidence: 99%

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Calculations of giant magnetoresistance in Fe/Cr trilayers using layer potentials determined fromab initiomethods

Pereiro¹,

Baldomir²,

Man’kovsky³

et al. 2007

J. Phys.: Condens. Matter

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The ab initio full-potential linearized augmented plane-wave method explicitly designed for the slab geometry was employed to elucidate the physical origin of the layer potentials for the trilayers nFe/3Cr/nFe(001), where n is the number of Fe monolayers. The thickness of the transition-metal ferromagnet has been ranged from n = 1 up to n = 8 while the spacer thickness was fixed to 3 monolayers. The calculated potentials were inserted in the Fuchs-Sondheimer formalism in order to calculate the giant magnetoresistance (GMR) ratio. The predicted GMR ratio was compared with the experiment and the oscillatory behavior of the GMR as a function of the ferromagnetic layer thickness was discussed in the context of the layer potentials. The reported results confirm that the interface monolayers play a dominant role in the intrinsic GMR.

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Section: Gmr Predictionssupporting

confidence: 81%

Section: Gmr Predictionsmentioning

confidence: 84%

Section: Gmr Predictionsmentioning

confidence: 99%

See 1 more Smart Citation

Calculations of giant magnetoresistance in Fe/Cr trilayers using layer potentials determined fromab initiomethods

Pereiro¹,

Baldomir²,

Man’kovsky³

et al. 2007

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…It is well known that the interface spin-dependent scattering between the slabs is a key factor of the spin-dependent resistivity in multilayers [32][33][34]. Most of the interface dependence found in them is related to the roughness in the interface, and the ).…”

Section: Charge Distribution and Electronic Structurementioning

confidence: 99%