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Effective Band Model Of Giant Magnetoresistance

Author

Listed:
  • K. WARDA

    (Solid State Physics Department, University of Łódź, 90-236 Łódź, ul. Pomorska 149/153, Poland)

  • L. WOJTCZAK

    (Solid State Physics Department, University of Łódź, 90-236 Łódź, ul. Pomorska 149/153, Poland)

  • D. BALDOMIR

    (Facultade de Fisica, Departamento de Fisica Aplicada, 15706, Universidad Santiago de Compostela, Spain)

  • M. PEREIRO

    (Facultade de Fisica, Departamento de Fisica Aplicada, 15706, Universidad Santiago de Compostela, Spain)

Abstract

We consider the transport properties in magnetic multilayers for electronic current in the plane of the surfaces. The model is based on the effective s-band construction for the multilayer consisting of the metallic spacer and two ferromagnetic layers characterized by s–d coupling. We discuss the quasielectron spectrum in its effective mass approximation, with the perturbation taken into account by the effective potential, which also includes the interface contributions. We find the energy dispersion and the Fermi level for the effective s-band common for electrons in the whole sample. The results are equivalent in fact to those obtained within the Hoon–Falicov model, but they seem to us much simpler and more transparent for their extensions and applications.

Suggested Citation

  • K. Warda & L. Wojtczak & D. Baldomir & M. Pereiro, 2001. "Effective Band Model Of Giant Magnetoresistance," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 8(03n04), pages 271-279.
    • Handle: RePEc:wsi:srlxxx:v:08:y:2001:i:03n04:n:s0218625x01001026
    DOI: 10.1142/S0218625X01001026
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