TY - JOUR
T1 - Propagation and focusing of high-frequency rayleigh phonons
AU - Höss, C.
AU - Kinder, H.
N1 - Funding Information:
We thank the Deutsche (DFG) for funding the project.
PY - 1996/4/1
Y1 - 1996/4/1
N2 - We report on the experimental observation of high-frequency Rayleigh phonons on Si(0 0 1) surfaces. By use of the phonon-imaging technique we can measure the spatial phonon flux distribution of Rayleigh phonons in the Si(0 0 1) surface. Since the mean free path of Rayleigh phonons is limited by surface-roughness-induced scattering mainly into bulk phonons, a micro-imaging experiment was performed. As a suitable detector we use ion implanted Si : P bolometers of 18 μm in diameter and 200 nm in depth, operated at 1 K. To obtain as clean surfaces as possible, the technique of laser annealing in situ was applied. Experimental results showing propagation distances of several hundred micrometers for Rayleigh phonons are presented.
AB - We report on the experimental observation of high-frequency Rayleigh phonons on Si(0 0 1) surfaces. By use of the phonon-imaging technique we can measure the spatial phonon flux distribution of Rayleigh phonons in the Si(0 0 1) surface. Since the mean free path of Rayleigh phonons is limited by surface-roughness-induced scattering mainly into bulk phonons, a micro-imaging experiment was performed. As a suitable detector we use ion implanted Si : P bolometers of 18 μm in diameter and 200 nm in depth, operated at 1 K. To obtain as clean surfaces as possible, the technique of laser annealing in situ was applied. Experimental results showing propagation distances of several hundred micrometers for Rayleigh phonons are presented.
UR - http://www.scopus.com/inward/record.url?scp=0030124596&partnerID=8YFLogxK
U2 - 10.1016/0921-4526(95)00861-6
DO - 10.1016/0921-4526(95)00861-6
M3 - Article
AN - SCOPUS:0030124596
SN - 0921-4526
VL - 219-220
SP - 706
EP - 709
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
IS - 1-4
ER -