Matches in SemOpenAlex for { <https://semopenalex.org/work/W3184459700> ?p ?o ?g. }
- W3184459700 abstract "A large unidirectional magnetoresistance (UMR) ratio of $mathrm{UMR}/{R}_{xx}ensuremath{approx}0.36%$ is found in W/CoFeB metallic bilayer heterostructures at room temperature. Three different regimes in terms of the current dependence of the UMR ratio are identified: a spin-dependent-scattering mechanism regime at small current densities $Jensuremath{approx}{10}^{9}phantom{rule{0.16em}{0ex}}mathrm{A}/{mathrm{m}}^{2}$ (UMR ratio $ensuremath{propto}J$), a spin-magnon-interaction mechanism regime at intermediate $Jensuremath{approx}{10}^{10}phantom{rule{0.16em}{0ex}}mathrm{A}/{mathrm{m}}^{2}$ (UMR ratio $ensuremath{propto}{J}^{3}$), and a spin transfer torque (STT) regime at $Jensuremath{approx}{10}^{11}phantom{rule{0.16em}{0ex}}mathrm{A}/{mathrm{m}}^{2}$ (UMR ratio independent of J). We verify the direct correlation between this large UMR and the transfer of spin angular momentum from the W layer to the CoFeB layer by both field-dependent and current-dependent UMR characterizations. Numerical simulations further confirm that the large STT-UMR stems from the tilting of the magnetization affected by the spin Hall effect-induced STTs. An alternative approach to estimate dampinglike spin torque efficiencies from magnetic heterostructures is also proposed." @default.
- W3184459700 created "2021-08-02" @default.
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- W3184459700 date "2021-07-27" @default.
- W3184459700 modified "2023-10-17" @default.
- W3184459700 title "Large unidirectional magnetoresistance in metallic heterostructures in the spin transfer torque regime" @default.
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- W3184459700 doi "https://doi.org/10.1103/physrevb.104.024432" @default.
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