Resonant interaction of bulk phonons with phonons localized at a superlattice-liquid interface

摘要

We theoretically investigate the resonant interaction of acoustic phonons with the vibrational modes localized at a superlattice-liquid (SL-L) interface. Using the transfer matrix method, we calculate the phonon transmission rate and found the particular resonance peak due to the localized mode. The magnitude of the peak depends sensitively on the number of bilayers (N) of the SL. For a special N, phonons can be resonantly transmitted through the SL into liquid without attenuation, in spite of the large acoustic mismatch. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 7]