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Quantum simulations of spin-relaxation and transport in copper

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JournalEuropean physical journal b
DatePublished - Oct 2007
Issue number4
Volume59
Number of pages6
Pages (from-to)451-456
Original languageEnglish

Abstract

A quantum equation of motion method is applied to simulate conduction electron spin-relaxation and transport in the presence of the spin-orbit interaction and disorder. A spin-relaxation time of 25ps is calculated for Cu with a realistic low temperature resistivity of 3.2 mu Omega cm - corresponding to a spin-diffusion length of about 0.4 mu m. Spin-relaxation in a finite nanocrystallite of Cu is also simulated and a short spin-relaxation time (0.47 ps) is calculated for a crystallite with 7% surface atoms. The spin-relaxation calculated for bulk Cu is in good agreement with experimental evidence, and the dramatic nanocrystallite effect observed has important implications for nano-spintronic devices.

    Research areas

  • CONDUCTION ELECTRONS, LATTICE-RELAXATION, MAGNETORESISTANCE, DIFFUSIVITY, MULTILAYERS, MODEL

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