A.E. Bruchhausen, N.D. Lanzillotti-Kimura, B. Jusserand, A. Soukiassian, L. Xie, X.Q. Pan, T. Dekorsy, D.G. Schlom, and A. Fainstein, “Acoustic Confinement Phenomena in Oxide Multifunctional Nanophononic Devices,” Physical Review Materials 2 (2018) 106002-1 – 106002-12.