Nanowerk January 14, 2021 Microwave photon-magnon interaction has emerged in recent years as a promising platform for both classical and quantum information processing. Yet, this interaction had proved impossible to manipulate in real time. By smart engineering, a team of researchers in the US (Argonne National Laboratory, University of Chicago) employed an electrical signal to periodically alter the magnon vibrational frequency and thereby inducing effective magnon-photon interaction resulting in a microwave-magnonic device with on-demand tunability. The device can control the strength of the photon-magnon interaction at any point as information is being transferred between photons and magnons. It can even […]
Tag Archives: Magnonics
Integrated circuit of pure magnons
Nanowerk October 20, 2020 Magnons have been used to encode information in computing applications, and magnonic device components, including logic gates, transistors, and units for non-Boolean computing. Magnonic directional couplers, which can function as circuit building blocks have been impractical because of their millimetre dimensions and multimode spectra. An international team of researchers (Austria, Ukraine, Germany, Belgium, the Netherlands) has developed a magnonic directional coupler based on yttrium iron garnet that has submicrometre dimensions. The coupler consists of single-mode waveguides with a width of 350 nm. They used the amplitude of a spin wave to encode information and to guide it […]
Overtones can provide faster data communication
Phys.org January 10, 2019 An international team of researchers (Sweden, Portugal) demonstrated how to play and strengthen overtones at the nano level. The researchers have produced spintronic oscillators that strengthen spin wave signals in several steps. When they increased the drive current, the signal showed a sharp jump in frequency: first, from the fundamental frequency of 9 GHz to 14 GHz and then a second jump to 20 GHz. While the wavelength of the fundamental tone is about 500 nanometres, the wavelength of the demonstrated third overtone is as short as 74 nanometres. Future studies on smaller oscillators should be […]