Phonon Bloch oscillations in acoustic-cavity structures

Abstract

We describe a semiconductor multilayer structure based in acoustic phonon cavities and achievable with MBE technology, designed to display acoustic phonon Bloch oscillations. We show that forward and backscattering Raman spectra give a direct measure of the created phononic Wannier-Stark ladder. We also discuss the use of femtosecond laser impulsions for the generation and direct probe of the induced phonon Bloch oscillations. We propose a gedanken experiment based in an integrated phonon source-structure-detector device, and we present calculations of pump and probe time dependent optical reflectivity that evidence temporal beatings in agreement with the Wannier-Stark ladder energy splitting.

PDF file including 4 figures

References in corpus (1)

• Confinement of acoustical vibrations in a semiconductor planar phonon cavity

Cited by in corpus (7)

• Acoustic Analogue of Bloch Oscillations and Resonant Zener Tunneling in Ultrasonic Superlattices
• Wannier-Stark ladders in one-dimensional elastic systems
• Theory of parametric amplification in in superlattices
• Brillouin Scattering in Hybrid Optophononic Bragg Micropillar Resonators at 300 GHz
• Nanomechanical resonators based on adiabatic periodicity-breaking in a superlattice
• Incommensurate magnetic order in rare earth and transition metal compounds with local moments
• Bloch oscillation of elastic waves in the graded lattice of 3D-printed hollow elliptical cylinders