Vibrational properties of an adsorbed surface layer on a simple model crystal

Propagation of laser radiation along a vertical path in the atmosphere with stimulated Raman scattering

“…The three-crystal-component time-degenerate bulk phonon dispersion relation is w 2 = 2(pi/mi)(3cos k l a ocos k2aocos k,ao) (4) where k is the propagation vector.…”

“…It is true that such experimental investigations are not easy. The actual situation of this subject can perhaps be compared with that of surface [2], interface [3] and adsorbate [4] phonons some years ago. In a similar spirit and with the help of a simple model, we start here to study sandwich phonons.…”

Equilibrium at Solid Surfaces

“…Dobrzynski & Mills (10) have considered a model which at least approxi mates the modes of a semi-infinite crystal with one layer of heavier or lighter atoms on the surface. The results as they stand are appropriate for surface atoms with altered binding forces, or for a layer of impurity, but with some re arrangement and zero-shifting, they can be made applicable to the adsorption of a layer of foreign atoms in the same arrangement as the underlying solid.…”

Preparation and Properties of rf Sputtered Films of ZnO as an Ultrasonic Transducer

“…However, to calculate AF*(T) as a function of temperature, it is not necessary to employ Eqs. (8)- (9); instead the integral in Eq. (5) can be evaluated directly in the complex frequency plane, with a wedge-shape contour as shown in Fig.…”