Vibrational spectrum of vicinal surfaces
نویسندگان
چکیده
منابع مشابه
Phonons of Metallic Vicinal Surfaces
We present an analysis of the vibrational dynamics of metal vicinal surfaces using the embedded atom method to describe the interaction potential and both a real space Green’s function method and a slab method to calculate the phonons. We report two main general characteristics : a global shift of the surface vibrational density of states resulting from a softening of the force field. The latte...
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Based on high-resolution electron energy loss spectroscopy and temperature-programmable desorption, benzene chemisorption on vicinal and nominally flat Si(100) surfaces has been studied for various adsorption, annealing, and site blocking treatments. Three different chemisorbed benzene (C6H6 and C6D6) phases with distinct thermal desorption characteristics and different vibrational spectra have...
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The morphological instabilities of vicinal Si(111) due to a DC electric current and due to the 7 x 7 reconstruction are studied using a variety of diffraction and imaging techniques. The current induced instabilities which occur at sublimation temperatures or under conditions of step-flow produce morphological features on length scales appropriate for optical studies, 5 50,u. Optical microscopy...
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We discuss the possibility that, besides roughening, a vicinal surface could display preroughening (PR), and consider the possible mechanisms for its promotion. Within the framework of a terrace-step-kink model, it turns out that a PR transition is possible, and could be induced by a short-range repulsion between parallel kinks along the same step or on adjacent steps, or even by some kind of e...
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We relate bosonic density uctuations of a Fermi uid in one dimension to surface uctuations. Thereby we easily identify the parameters governing the low energy, Luttinger liquid behavior. In particular we recover the Haldane relation in case the surface is tilted only transversely to the Euclidean time direction. We develop a hydrodynamic uctuation theory for the world lines of particles. Since ...
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ژورنال
عنوان ژورنال: Solid State Communications
سال: 1991
ISSN: 0038-1098
DOI: 10.1016/0038-1098(91)90473-9