Publications (5)
Interference of ultrahigh frequency acoustic phonons from distant quasi-continuous sources
C. Xiang, E. R. Cardozo de Oliveira, S. Sandeep +9
The generation of propagating acoustic waves is essential for telecommunication applications, quantum technologies, and sensing. Up to now, the electrical generation has been at th…
Open Nanoacoustic Resonators Based on SrTiO/YBaCuO Superlattices
S. Sandeep, O. Colmegna, S. Carreira +4
We report the design and experimental demonstration of an open nanophononic cavity based on a hybrid oxide superlattice composed of SrTiO (STO) and YBaCuO (YBCO…
Coupled Topological Interface States and Phonon Molecules in GaAs/AlAs Superlattices
S. Sandeep, O. Colmegna, C. Xiang +5
Topological interface states in one-dimensional superlattices provide spatially localized phonon modes protected by the topology of the underlying band structure. In GaAs/AlAs dist…
GaAs/AlAs Acoustic Nanocavities for Coherent GHz-THz Phonon Engineering
S. Sandeep, E. R. Cardozo de Oliveira, E. Mehdi +1
The controlled confinement of high-frequency acoustic phonons in semiconductor nanostructures has emerged as a key ingredient for functional nanophononic and hybrid quantum technol…
Structural, magnetic, and nanoacoustic characterization of Co/Pt superlattices
E. R. Cardozo de Oliveira, C. Xiang, C. Borrazás +7
Superlattices presenting a spatial modulation of the elastic properties appear as a main tool to reach the THz regime in nanoacoustic devices. The exploration of alternative materi…