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Large-area chemically grown Sb2Te3 topological insulator is exploited to generate spin-charge conversion in Fe/Au/Sb2Te3. While broadband ferromagnetic resonance spectroscopy shows a clear increase of the damping parameter in Fe/Sb2Te3 when compared to Fe, electrically-detected spin pumping only occurs when an Au interlayer is used, with a measured inverse Edelstein effect conversion efficiency of λIEE = 0.27 nm.

The research has been published open access on Advanced Materials Interfaces within the SKYTOP EU project (FETPROACT 2018-01, no. 824123)

Contact: Roberto Mantovan