Fig. 3: AHE loop shift with a threshold current in Mn3Pt/Ti/CoFeB/MgO/SiO2.
From: Anomalous spin current anisotropy in a noncollinear antiferromagnet
a (Upper) The schematic of the Mn3Pt/Ti/CoFeB/MgO/SiO2 heterostructure, with numbers in parentheses indicate layer thickness in nanometers. (Lower) The schematic of the AHE loop shift measurement setup. b The AHE loops under \(I\) = ± mA almost overlap with each other. c Under I = ± 1 mA, the AHE loops show an obvious shift towards positive or negative values. d The I dependence of \({H}_{{{{{{\rm{eff}}}}}}}^{z}\), which is defined as the shift of the AHE loop, at selected \({\phi }_{{{{{{\rm{E}}}}}}}\) of 0°, 45°, and 90°. e The \({\phi }_{{{{{{\rm{E}}}}}}}\) dependence of the \({H}_{{{{{{\rm{eff}}}}}}}^{z}\) per unit current density. The anisotropy between \({\phi }_{{{{{{\rm{E}}}}}}}=\) 0° and \({\phi }_{{{{{{\rm{E}}}}}}}=\) 90° is highlighted by the enlarged symbols and dashed horizontal lines. The solid line is a fit to \({\lambda }_{z}\cos {\phi }_{{{{{{\rm{E}}}}}}}+{\mu }_{z}\sin {\phi }_{{{{{{\rm{E}}}}}}}\). The error bars represent the standard deviations derived from measurements on three devices.
