Experimental verification of the Thiele equation for skyrmion Hall angle

Abstract

Magnetic skyrmions [1,2] are a topologically stable spin configurations that are currently extensively studied as promising information carriers in spintronic devices [3-8]. When an electric current is injected, the skyrmions exhibit the skyrmion Hall effect [9,10]. This skyrmion Hall effect can be described by the Thiele equation [11-13]. Here, we experimentally examined the validity of the Thiele equation. For this study, a series of Pt/Co/W films with a wide range of Co layer thicknesses were examined. The results verified the Thiele equation of the skyrmion Hall angle as a function of the magnetic anisotropy and Gilbert damping constants.