[Déplacement de paroi magnétique par transfert de spin]
Par transfert de moment cinétique, un courant polarisé en spin peut exercer un couple sur lʼaimantation dʼun nano-aimant. Cette découverte permet de contrôler la direction dʼune aimantation par simple injection de courant, sans lʼaide dʼun champ magnétique extérieur. Le transfert de spin peut être utilisé pour induire des renversements ou des oscillations dʼaimantation, ou encore pour contrôler la position dʼune paroi magnétique. Dans cette revue, nous nous concentrerons sur ce dernier mécanisme, qui est aujourdʼhui le sujet dʼintenses recherches. En effet, non seulement ses origines microscopiques sont encore sujettes à débat, mais de plus de très prometteuses applications aux mémoires magnétiques non-volatiles sont en jeu.
The discovery that a spin polarized current can exert a large torque on a ferromagnet through a transfusion of spin angular momentum, offers a new way to control a magnetization by simple current injection, without the help of an applied external field. Spin transfer can be used to induce magnetization reversals and oscillations, or to control the position of a magnetic domain wall. In this review, we focus on this last mechanism, which is today the subject of an extensive research, both because the microscopic details for its origin are still debated, but also because promising applications are at stake for non-volatile magnetic memories.
Accepté le :
Publié le :
Julie Grollier 1 ; A. Chanthbouala 1 ; R. Matsumoto 1 ; A. Anane 1 ; V. Cros 1 ; F. Nguyen van Dau 1 ; Albert Fert 1
@article{CRPHYS_2011__12_3_309_0,
author = {Julie Grollier and A. Chanthbouala and R. Matsumoto and A. Anane and V. Cros and F. Nguyen van Dau and Albert Fert},
title = {Magnetic domain wall motion by spin transfer},
journal = {Comptes Rendus. Physique},
pages = {309--317},
publisher = {Elsevier},
volume = {12},
number = {3},
year = {2011},
doi = {10.1016/j.crhy.2011.03.007},
language = {en},
}
TY - JOUR AU - Julie Grollier AU - A. Chanthbouala AU - R. Matsumoto AU - A. Anane AU - V. Cros AU - F. Nguyen van Dau AU - Albert Fert TI - Magnetic domain wall motion by spin transfer JO - Comptes Rendus. Physique PY - 2011 SP - 309 EP - 317 VL - 12 IS - 3 PB - Elsevier DO - 10.1016/j.crhy.2011.03.007 LA - en ID - CRPHYS_2011__12_3_309_0 ER -
%0 Journal Article %A Julie Grollier %A A. Chanthbouala %A R. Matsumoto %A A. Anane %A V. Cros %A F. Nguyen van Dau %A Albert Fert %T Magnetic domain wall motion by spin transfer %J Comptes Rendus. Physique %D 2011 %P 309-317 %V 12 %N 3 %I Elsevier %R 10.1016/j.crhy.2011.03.007 %G en %F CRPHYS_2011__12_3_309_0
Julie Grollier; A. Chanthbouala; R. Matsumoto; A. Anane; V. Cros; F. Nguyen van Dau; Albert Fert. Magnetic domain wall motion by spin transfer. Comptes Rendus. Physique, Volume 12 (2011) no. 3, pp. 309-317. doi : 10.1016/j.crhy.2011.03.007. https://comptes-rendus.academie-sciences.fr/physique/articles/10.1016/j.crhy.2011.03.007/
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