Propagating spin wave spectroscopy on Co2MnSi Heusler films shows fully spin-polarized current consistent with half-metallicity and estimates the non-adiabatic spin-transfer-torque parameter.
Spin-polarization of the electric current in half-metallic Co$_2$MnSi Heusler thin films
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abstract
Using propagating spin wave spectroscopy we measure the spin wave Doppler shift in patterned MgO/Co$_2$MnSi/MgO thin films and determine the degree of spin-polarization of the electric current. Our measurements reveal that the current is fully spin-polarized in the devices. This shows that the half-metallic character of the electron band structure translates into a fully spin polarized current flowing across the patterned films. Additionally, we measure a current-induced change of the spin-wave attenuation from which we estimate the non-adiabatic spin-transfer-torque parameter.
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2026 2verdicts
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Epitaxial L2_1-ordered Co2MnSi waveguides exhibit intrinsic cubic magnetocrystalline anisotropy that suppresses first-order nonlinear instabilities over several GHz at zero bias and stabilizes low-bias Damon-Eshbach operation.
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Spin-polarization of the electric current in half-metallic Co$_2$MnSi Heusler thin films
Propagating spin wave spectroscopy on Co2MnSi Heusler films shows fully spin-polarized current consistent with half-metallicity and estimates the non-adiabatic spin-transfer-torque parameter.