Fig. 6: The processes limiting the quality factor of a mechanical resonator.
From: Spin-optomechanical cavity interfaces by deep subwavelength phonon-photon confinement
At low temperature only clamping losses matter (green), but past a certain temperature Akhieser (blue) and Landau-Rumer (orange) processes dominate. These estimates depend on thermal properties of bulk diamond as reported in the literature. Thin-sheet diamond, as used in our devices, can have slightly differing properties.
