The dispersion of acoustic and optical phonons in highly boron-doped diamond has been measured by inelastic X-ray scattering at an energy resolution of 6.4 meV. The sample is doped in the metallic regime and shows superconductivity below 4.2 K (midpoint). The data are compared to pure and ...
We report the results of the investigation of the acoustic and optical phonons in quasi-two-dimensional antiferromagnetic semiconductors of the transition metal phosphorus trisulfide family with Mn, Fe, Co, Ni, and Cd as metal atoms. The Brillouin-Mandelstam and Raman light scattering spectroscopies ...
phonons/ acoustic two-phonon vibrationslight metalsoptical one-phonon vibrationsFermi resonanceanharmonicitycrystal lattice vibrationsIt is shown that the anharmonicity of crystal lattice vibrations in light metals such as beryllium, can give rise to a Fermi resonance of optical one-phonon and acoustic ...
Related to Acoustic phonon: Optical phononpho·non (fō′nŏn′) n. The quantum of acoustic or vibrational energy, considered as a quasiparticle and used especially in mathematical models to calculate thermal and vibrational properties of solids. American Heritage® Dictionary of the English Languag...
Observation of coherent acoustic and optical phonons in bismuth nanowires by a femtosecond pump-probe technique. J Appl Phys 2008;104:103110.10.1063/1.3021101Search in Google Scholar [79] Sakuma H, Tomoda M, Otsuka PH, et al. Vibrational modes of GaAs hexagonal nanopillar arrays studied with ...
LO phonons in carbyne under 10% strain do not exhibit any mode softening, but the DOS becomes broader and their peaks heights increase in the range of 320 ~ 370 THz. Interestingly, under the 10% strain, a small phonon bandgap of 15 THz is opened between the LA and the TO ...
Combining heat-pulse scanning and tunnel-junction detection, we have observed ballistic propagation of high frequency (>700 GHz) acoustic phonons over ~1-mm path lengths in germanium. The ballistic nature of the phonons is determined by sharp variations in phonon flux with propagation angle. The ...
Here, we develop a platform for nanoscale cavity optomechanical circuits in which optomechanical cavities supporting co-localized 1,550 nm photons and 2.4 GHz phonons are combined with photonic and phononic waveguides. Working in GaAs facilitates manipulation of the localized mechanical mode either ...
On the importance of optical phonons to thermal conductivity in nanostructures. Applied Physics Letters 99, 053122 (2011). Article ADS Google Scholar Yan, J. A., Ruan, W. Y. & Chou, M. Y. Phonon dispersions and vibrational properties of monolayer, bilayer and trilayer graphene: Density-...
Optimization of acoustic dispersion for high performance thin film BAW resonators Anomalous Acoustic Dispersion in Centrosymmetric Crystals with Soft Optic Phonons Analytic band Monte Carlo model for electron transport in Si including acoustic and optical phonon dispersion...