Quantum transport simulation based on an equation of motion method: An application to current-perpendicular-to-the-plane giant magnetoresistance - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B Année : 2005

Quantum transport simulation based on an equation of motion method: An application to current-perpendicular-to-the-plane giant magnetoresistance

Résumé

A tight-binding equation of motion ͑EOM͒ method for the simulation of electronic transport in complex, and inhomogeneous systems is presented. Conductance is calculated in the linear response regime where chemical potentials can mimic electrochemical potentials. The technique is first elucidated by application to several simple systems to clarify important issues. A calculation of current-perpendicular-to-the-plane giant magnetoresistance ͑GMR͒ in a Co/ Cu multilayer then follows. A 67% GMR is calculated which originates primarily from spin-dependent interface resistances. The advantages of an EOM method are that complicated geometries can be considered, and interactions such as spin-orbit effects or phonons, for example, may be included easily.
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hal-04063692 , version 1 (09-04-2023)

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K P Mckenna, Lisa Michez, G J Morgan, B J Hickey. Quantum transport simulation based on an equation of motion method: An application to current-perpendicular-to-the-plane giant magnetoresistance. Physical Review B, 2005, 72 (5), pp.054418. ⟨10.1103/physrevb.72.054418⟩. ⟨hal-04063692⟩
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