2023/07/18 by Moyuki Yamamoto, Hodaka Kurokawa, Yamamoto, Moyuki +9 · 3 citations
Engineering · Materials Science · #Acoustic Wave Resonator Technologies #Applied Physics (physics.app-ph) #Diamond and Carbon-based Materials Research #FOS: Physical sciences #Metal and Thin Film Mechanics
paper · doi:10.48550/arxiv.2307.10271
openalex publication_date 2023/07/18 · openalex created_date 2023/07/22 · openalex updated_date 2026/08/01
Phonons confined in mechanical resonators can be coupled to a variety of quantum systems and are expected to be applied to hybrid quantum systems. Diamond surface acoustic wave (SAW) devices are capable of high efficiency in phonon interaction with color centers in diamond. The temperature dependence of the quality factor is crucial for inferring the governing mechanism of coupling efficiency between phonons and color centers in diamond. In this paper, we report on the temperature dependence of the quality factor of an AlN/diamond SAW device from room temperature to 5 K. The temperature dependence of the quality factor and resonant frequency suggests that the mechanism of SAW dissipation in the AlN/diamond SAW resonator at 5 GHz is the phonon-phonon scattering in the Akheiser region, and that further cooling can be expected to improve the quality factor. This result provides a crucial guideline for the future design of AlN/diamond SAW devices.