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Switching the magnetic configuration of a spin valve by current-induced domain wall motion (CROSBI ID 95579)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Grollier, Julie ; Lacour, D. ; Cros, Vincent ; Hamzić, Amir ; Vaures, A. ; Fert, Albert ; Adam, D. ; Faini, Giancarlo Switching the magnetic configuration of a spin valve by current-induced domain wall motion // Journal of applied physics, 92 (2002), 8; 4825-4827-x

Podaci o odgovornosti

Grollier, Julie ; Lacour, D. ; Cros, Vincent ; Hamzić, Amir ; Vaures, A. ; Fert, Albert ; Adam, D. ; Faini, Giancarlo

engleski

Switching the magnetic configuration of a spin valve by current-induced domain wall motion

We present experimental results on the displacement of a domain wall by injection of a dc current through the wall. The samples are 1-µm-wide long stripes of a CoO/Co/Cu/NiFe classical spin-valve structure. The stripes have been patterned by electron-beam lithography. A neck has been defined at 1/3 of the total length of the stripe and is pinning center for the domain walls, as shown by the steps of the giant magnetoresistance curves at intermediate levels (1/3 or 2/3) between the resistances corresponding to the parallel and antiparallel configurations. We show by electric transport measurements that, once a wall is trapped, it can be moved by injecting a dc current higher than a threshold current of the order of magnitude of 10^7 A/cm2. We discuss the different possible origins of this effect, i.e., local magnetic field created by the current and/or spin transfer from spin-polarized current.

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Podaci o izdanju

92 (8)

2002.

4825-4827-x

objavljeno

0021-8979

Povezanost rada

Fizika

Indeksiranost