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physics.app-ph2026
Cryogenic enhancement of phononic four-wave mixing in AlScN/SiC
A. K. Behera, B. Smith, X. Du +9
Surface acoustic wave platforms based on piezoelectric thin-film heterostructures provide sub-wavelength acoustic confinement, making them attractive for compact nonlinear phononic…
physics.app-ph2023
High-Efficiency Three-Wave and Four-Wave Phonon Mixing Via Electron-Mediated Nonlinearity in Semiconductor-Piezoelectric Heterostructures
Lisa Hackett, Matthew Koppa, Brandon Smith +7
We show that phononic frequency conversion can be enhanced by orders of magnitude in piezoelectric systems by heterogeneous integration of high-mobility semiconductor films. A lith…