TY - JOUR
T1 - Hypersonic phonon propagation in one-dimensional surface phononic crystal
AU - Graczykowski, Bartlomiej
AU - Sledzinska, Marianna
AU - Kehagias, Nikolaos
AU - Alzina, Francesc
AU - Reparaz, Juan Sebastian
AU - Sotomayor Torres, Clivia M.
PY - 2014
Y1 - 2014
N2 - Hypersonic, thermally activated surface acoustic waves propagating in the surface of crystalline silicon patterned with periodic stripes were studied by Brillouin light scattering. Two characteristic directions (normal and parallel to the stripes) of surface acoustic waves propagation were examined exhibiting a distinctive propagation behavior. The measured phononic band structure exhibits diverse features, such as zone folding, band gap opening, and hybridization to local resonance for waves propagating normal to the stripes, and a variety of dispersive modes propagating along the stripes. Experimental results were supported by theoretical calculations performed using finite element method.
AB - Hypersonic, thermally activated surface acoustic waves propagating in the surface of crystalline silicon patterned with periodic stripes were studied by Brillouin light scattering. Two characteristic directions (normal and parallel to the stripes) of surface acoustic waves propagation were examined exhibiting a distinctive propagation behavior. The measured phononic band structure exhibits diverse features, such as zone folding, band gap opening, and hybridization to local resonance for waves propagating normal to the stripes, and a variety of dispersive modes propagating along the stripes. Experimental results were supported by theoretical calculations performed using finite element method.
KW - Brillouin light scattering
KW - Crystalline silicons
KW - Dispersive modes
KW - Phonon propagation
KW - Propagation behavior
KW - Surface acoustic waves
KW - Theoretical calculations
KW - Thermally activated
U2 - 10.1063/1.4870045
DO - 10.1063/1.4870045
M3 - Article
SN - 0003-6951
VL - 104
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 12
ER -