Abstract
In the emerging field of $m\phantom{\rule{0}{0ex}}a\phantom{\rule{0}{0ex}}g\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}o\phantom{\rule{0}{0ex}}n\phantom{\rule{0}{0ex}}i\phantom{\rule{0}{0ex}}c\phantom{\rule{0}{0ex}}s$, the aim is to use magnons (quantized spin waves) as information carriers in computing technology. For magnonic operation, it is important to control the direction of spin-wave propagation at will. Employing the concept of a phased array antenna, this study shows that it is possible to control the direction of spin waves in thin films without any waveguide, magnonic crystal, or other specifically designed geometry. Furthermore, the phased-array concept enables spin-wave focusing, leading to local confinement with enhanced amplitude. These results pave the way for future work in magnon-based spintronic applications.
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