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\begin{document}
\title{Complete band gap opening in the spin-wave spectrum of two-dimensional bi-component magnonic crystals}
\author{\underline{S. Mamica}}
\affiliation{Faculty of Physics, Adam Mickiewicz University in Pozna\'n}
\author{M. Krawczyk}
\affiliation{Faculty of Physics, Adam Mickiewicz University in Pozna\'n}
\begin{abstract}
Two dimensional (2D) magnonic crystals (MCs) with tunable band gap in the spin-wave spectrum have potential applications in different types of magnonic devices, such as microwave resonators, spin-wave filters or switches, and current-controlled delay lines. To examine possibilities of the magnonic band gap opening we employ the plane-wave method (PWM) and solve linearised Landau-Lifshitz equation together with magnetostatic Maxwell equations [1]. We study spin-wave propagation in 2D bi-component MCs of finite thickness consisting of the scattering centres of elliptical cross section distributed in ferromagnetic matrix in sites of a square or hexagonal lattice with the in-plane structure distorted (squeezed) in one direction. We show that such squeezing leads to the spin-wave spectrum very sensitive to external magnetic field which can be used to opening / closing complete magnonic gaps.


\textbf{References:}
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{\scriptsize[1] S. Mamica, \textit{et al.}, Adv. Cond. Mat. Phys. 2012, 161387 (2012).}
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\textit{The project leading to this application has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No 644348 and the National Science Centre, Poland grant no.~UMO-2012//07/E/ST3/00538.}
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