Fig. 4: Field-dependent harmonic Hall measurements in TaIrTe4/Fe3GaTe2 heterostructure.
From: Tunable unconventional spin orbit torque magnetization dynamics in van der Waals heterostructures
a 1st harmonic transverse resistance (\({R}_{{xy}}^{1\omega }\)) as a function of magnetic field swept parallel to the sample surface (\(H{{{\perp }}}c\)) and perpendicular to current direction, measured at 300 K on Dev 2. b, c 2nd harmonic transverse resistance \({R}_{{xy}}^{2\omega }\) varied as a function of the external magnetic field applied along parallel to the sample surface, with \({H}_{y}\) representing \(H{{{\perp }}}c\) and perpendicular to the current (\(H{{{\perp }}}{J}_{a.c.}\)), and \({H}_{x}\) representing \(H{{{\perp }}}c\) and parallel to the current (\({H||{J}_{a.c.}}\)). d, e Dependence of the 2nd harmonic transverse resistance \(({R}_{{xy}}^{2\omega })\) on the in-plane magnetic field (\({H}_{y}\) and \({H}_{x}\)) for different magnitudes of constant write current density ( Ja.c.). The data is fitted using equations simplified from Supplementary Eq S1–S7 (also see Supplementary Eq. S8–S9 and Supplementary Note 8). f Extracted effective damping-like field components (\({H}_{{DL}}^{X,Y,Z}\)) corresponding to spin polarization (\({{{{\boldsymbol{\sigma }}}}}^{{{{\bf{X}}}}},{{{{\boldsymbol{\sigma }}}}}^{{{{\bf{Y}}}}},{{{{\boldsymbol{\sigma }}}}}^{{{{\bf{Z}}}}}\)) as a function of Ja.c. along with corresponding error bars are obtained from fits to the 2nd harmonic signal.
