All-magnonic repeater based on bistability
arxiv(2024)
摘要
Bistability, a universal phenomenon found in diverse fields such as biology,
chemistry, and physics, describes a scenario in which a system has two stable
equilibrium states and resets to one of the two states. The ability to switch
between these two states is the basis for a wide range of applications,
particularly in memory and logic operations. Here, we present a universal
approach to achieve bistable switching in magnonics, the field processing data
using spin waves. As an exemplary application, we use magnonic bistability to
experimentally demonstrate the still missing magnonic repeater. A pronounced
bistable window is observed in a 1um wide magnonic conduit under an external rf
drive characterized by two magnonic stable states defined as low and high
spin-wave amplitudes. The switching between these two states is realized by
another propagating spin wave sent into the rf driven region. This magnonic
bistable switching is used to design the magnonic repeater, which receives the
original decayed and distorted spin wave and regenerates a new spin wave with
amplified amplitude and normalized phase. Our magnonic repeater is proposed to
be installed at the inputs of each magnonic logic gate to overcome the
spin-wave amplitude degradation and phase distortion during previous
propagation and achieve integrated magnonic circuits or magnonic neuromorphic
networks.
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