Highly efficient coherent amplification of zero-field spin waves in YIG nanowaveguides.

ABSTRACT: Transmission and processing of information at the nanoscale using spin waves and their quanta-magnons-offer numerous advantages and opportunities that make it a promising next-generation technology for integrated electronics. The main challenges that still need to be addressed to ensure high competitiveness of magnonic devices include finding ways to efficiently amplify spin waves in nanostructures and developing nanocircuits that can operate without the need for an external bias magnetic field. Here, we demonstrate how these two challenges can be solved using nanowaveguides fabricated from a low-loss magnetic insulator. We show that using local parametric pumping with a power of only a few milliwatts, one can achieve coherent amplification of spin-wave pulses by more than two orders of ma

SUBMITTER: Nikolaev KO 

PROVIDER: S-EPMC12442858 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature