publication . Preprint . 2012

Giant spin torque in systems with anisotropic exchange interaction

Korenev, Vladimir L.;
Open Access English
  • Published: 16 Oct 2012
Control of magnetic domain wall movement by the spin-polarized current looks promising for creation of a new generation of magnetic memory devices. A necessary condition for this is the domain wall shift by a low-density current. Here I show that a strongly anisotropic exchange interaction between mobile heavy holes and localized magnetic moments enormously increases the current-induced torque on the domain wall as compared to systems with isotropic exchange. This enables one to control the domain wall motion by current density 10^4 A/cm^2 in ferromagnet/semiconductor hybrids. The experimental observation of the anisotropic torque will facilitate the integration...
free text keywords: Condensed Matter - Mesoscale and Nanoscale Physics
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