نتایج جستجو برای: phonons
تعداد نتایج: 8936 فیلتر نتایج به سال:
Department ofPhysics and Astronomy, University ofDelaware, Newark, Delaware 19716 (Received 21 June 1989) Inelastic neutron scattering studies of excitations in ' Ar solid monolayers show a large thermal broadening of the scattered intensity between T =4 and 45 K. %'e find this thermal broadening can be readily explained in terms of anharmonic interactions between the phonons in the monolayers....
We explore the important role of the strong electron-phonon interaction in high temperature superconductivity through the study of the results of some important experiments, such as inelastic neutron and X-ray scattering, angle resolved photoemission spectroscopy, and isotope effects. We also present our computational results of the eigenvalues and eigenvectors of the Ag Raman modes, and the ...
Thermal transport in asymmetric sawtooth nanowires was investigated. The boundaries reflect phonons differently depending on the frequency and momentum of the phonon. These systems show thermally rectifying behavior when the boundary reflections are a function of both the direction the phonon is traveling and the frequency of the phonon. This rectifying effect could be useful for thermal manage...
The impulsive excitation and phase sensitive detection of coherent pho nons and phonon polaritons provide a detailed insight into the dynamical properties of matter The experiments are based on optical pump probe techniques with fem tosecond time resolution These techniques enable the detection of amplitude and phase of the coherent lattice motion simultaneously Frequencies in the THz range and...
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