High elastic impedance terasonic hybrid superlattices

Abstract

The fabrication of new hard/soft hybrid superlattices (SLs) by pulsed laser deposition strongly suppresses interfacial intermixing, as compared to the strong infiltration occurring in their analogue periodic structures prepared by spin-coating. Döring et al (2016 New J. Phys . http://dx.doi.org/10.1088/1367-2630/18/9/092002 18 http://dx.doi.org/10.1088/1367-2630/18/9/092002 ) report on the growth of SLs, optimally realizing the wealth of hard and soft materials to boost the terasonic bandgap width and enhance phonon localization upon designed layer thickness sequence in aperiodic SLs. Optimal utilization of the fabrication technique could drive the design of architected SLs with strong photon–phonon coupling and tuned heat conduction.

Keywords

• pulsed laser deposition
• pump-probe spectroscopy
• phonon localization