Spin-wave propagation in cubic anisotropic materials

Abstract

The information carrier of modern technologies is the electron charge whose transport inevitably generates Joule heating. Spin-waves, the collective precessional motion of electron spins, do not involve moving charges and thus avoid Joule heating. In this respect, magnonic devices in which the information is carried by spin-waves attract interest for low-power computing. However implementation of magnonic devices for practical use suffers from low spin-wave signal and on/off ratio. Here we demonstrate that cubic anisotropic materials can enhance spin-wave signals by improving spin-wave amplitude as well as group velocity and attenuation length. Furthermore, cubic anisotropic material shows an enhanced on/off ratio through a laterally localized edge mode, which closely mimics the gate-controlled conducting channel in traditional field-effect transistors. These attractive features of cubic anisotropic materials will invigorate magnonics research towards wave-based functional devices.

References in corpus (5)

• The building blocks of magnonics
• Realization of XNOR and NAND spin-wave logic gates
• Spin wave nonreciprocity for logic device applications
• Multi-Frequency Magnonic Logic Circuits for Parallel Data Processing
• Giant nonreciprocal emission of spin waves in Ta/Py bilayers

Cited by in corpus (5)

• Spin-wave propagation in the presence of inhomogeneous Dzyaloshinskii-Moriya interactions
• Optical excitation of propagating magnetostatic waves in an epitaxial Galfenol film by an ultrafast magnetic anisotropy change
• Spectrum evolution and chirping of laser-induced spin wave packets in thin iron films
• Unidirectional propagation of spin waves excited by femtosecond laser pulses in a planar waveguide
• Anisotropic Magnon Spin Transport in Ultra-thin Spinel Ferrite Thin Films -- Evidence for Anisotropy in Exchange Stiffness