Resistive and ballistic phonon transport in $\beta$-Ga${}_2$O${}_3$

R. Ahrling, R. Mitdank, A. Popp +4

The anisotropic thermal conductivity and the phonon mean free path (mfp) in monoclinic $\beta$-Ga${}_2$O${}_3$ single crystals and homoepitaxial films of several $\mu$m were determined using…