Hybridized magnonic materials for THz frequency applications
arxiv(2024)
摘要
The capability of magnons to hybridize and strongly couple with diverse
excitations offers a promising avenue for realizing and controlling emergent
properties that hold significant potential for applications in devices,
circuits, and information processing. In this letter, we present recent
theoretical and experimental developments in magnon-based hybrid systems,
focusing on the combination of magnon excitation in an antiferromagnet with
other excitations, namely plasmons in a topological insulator, phonons in a 2D
AFM, and photons. The existence of THz frequency magnons, plasmons, and phonons
makes magnon-based hybrid systems particularly appealing for
high-operating-speed devices. In this context, we explore several directions to
advance magnon hybrid systems, including strong coupling between a surface
plasmon and magnon polariton in a TI/AFM bilayer, a giant spin Nernst effect
induced by magnon phonon coupling in 2D AFMs, and control of magnon-photon
coupling using spin torque.
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