Fig. 4: Ferris MOKE measurements of Cu, Au, Al, Ta, and Pt. | Nature Communications

Fig. 4: Ferris MOKE measurements of Cu, Au, Al, Ta, and Pt.

From: A sensitive MOKE and optical Hall effect technique at visible wavelengths: insights into the Gilbert damping

Fig. 4: Ferris MOKE measurements of Cu, Au, Al, Ta, and Pt.

a Measured \({{{\boldsymbol{V}}}}_{{{\boldsymbol{PD}}},{{{\boldsymbol{B}}}}_{{{\boldsymbol{mod}}}}}\). Dashed lines represent the parabolic fit. b Measured \(\surd {\widetilde{{{\boldsymbol{V}}}}}_{{{\boldsymbol{PD}}},{{{\boldsymbol{B}}}}_{{{\boldsymbol{mod}}}}}\) vs. \({{{\boldsymbol{B}}}}_{{{\boldsymbol{AC}}}}\) (solid lines). Dashed lines represent the linear fit of \({\sqrt{\widetilde{{{\boldsymbol{V}}}}}}_{{{\boldsymbol{PD}}},{{{\boldsymbol{B}}}}_{{{\boldsymbol{mod}}}}}\). Close triangles represent the theoretically calculated \({\sqrt{\widetilde{{{\boldsymbol{V}}}}}}_{{{\boldsymbol{PD}}}}\). c \(|{{{\boldsymbol{\Phi }}}}_{{{\bf{K}}}}|\) of Pt, Ta, Al, Au, and Cu. d Extracted \(\surd {\widetilde{{{\boldsymbol{V}}}}}_{{{\boldsymbol{Noise}}}}\) traces as a function of \({{{\boldsymbol{B}}}}_{{{\boldsymbol{AC}}}}\). e \({\sqrt{\widetilde{{{\boldsymbol{V}}}}}}_{{{\boldsymbol{RMS}}},{{\boldsymbol{norm}}}}\) as a function of \({{{\boldsymbol{a}}}}_{{{{\boldsymbol{B}}}}_{{{\boldsymbol{mod}}}}}^{{{\boldsymbol{1}}}/{{\boldsymbol{2}}}}\). f \({\sqrt{\widetilde{{{\boldsymbol{V}}}}}}_{{{\boldsymbol{RMS}}},{{\boldsymbol{norm}}}}\) as a function of \({{{\boldsymbol{\alpha }}}}_{{{\boldsymbol{sp}}}}^{{{\boldsymbol{YIG}}}}\). Values were taken from ref. 25. Inset: noise-damping correlation in Py/NM bilayers. In e, f black dashed line represents a linear fit. In all panels, traces of Cu, Au, Al, Ta, and Pt are indicated by red, yellow, gray, green, and blue colors, respectively.

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