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All-Electrical Spin-to-Charge Conversion in Sputtered BixSe1-x
Won Young Choi1, Isabel C Arango1, Van Tuong Pham2
1CIC nanoGUNE BRTA, 20018 Donostia-San Sebastián, Basque Country, Spain.
Intermixing in BixSe1-x nanodevices significantly impacts spin-to-charge conversion efficiency. This study reveals overestimations due to adjacent metals, crucial for spintronic device development.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Spintronic devices require efficient spin-to-charge conversion for signal readout.
- Intermixing at material interfaces often affects device properties but is frequently overlooked.
Purpose of the Study:
- To demonstrate all-electrical spin-to-charge conversion in BixSe1-x nanodevices.
- To investigate the influence of intermixing on spin-to-charge conversion efficiency estimations.
Main Methods:
- Fabrication of BixSe1-x nanodevices.
- Electrical characterization of spin-to-charge conversion.
- Analysis of intermixing effects using adjacent metal contacts.
Main Results:
- Demonstrated all-electrical spin-to-charge conversion in BixSe1-x.
- Observed overestimation of conversion efficiency by up to tens of times due to adjacent metals.
- Identified intermixing-induced compositional changes and polycrystal properties as key factors.
Conclusions:
- Intermixing significantly affects spin-to-charge conversion efficiency in BixSe1-x nanodevices.
- Accurate material characterization is vital to avoid overestimating spin-to-charge conversion.
- Strategies for enhancing spin-to-charge conversion signals in spintronic devices can be developed by considering intermixing effects.
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