Lattice dynamics of tetracyanoethylene

Lattice Dynamics of Tetracyanoethylene

Dynamics of lattice kinks

We consider a class of Hamiltonian nonlinear wave equations governing a field defined on a spatially discrete one dimensional lattice, with discreteness parameter, d = h, where h > 0 is the lattice spacing. The specific cases we consider in detail are the discrete sine-Gordon (SG) and discrete φ models. For finite d and in the continuum limit (d → ∞) these equations have static kink-like (heter...

An & srmonic & lattice Dynamics

'A. H. Wilson, Theory ofMetals, 2nd ed. (Cambridge U. P., Cambridge, England, 1953). "I.Nebenzahl and M. Weger, Philos. Mag. 24, 1119(1971). 2'C. Herring, Phys. Rev. 96, 1163 (1954). C. Herring, Semiconductors and Phosphors, edited by M. Schon and H. Welker (Vieweg, Braunschweig, Germany, 1958), p. 184. "P. Eklund (private communication). "H. Van Cong and G. Mesnard, Phys. Status Solidi 8 50, 5...

LATTICE DYNAMICS OF CUPRITE (Cu2O)

The phonon dispersion curves of Cu 0 have been calculated using 2 a shell model which takes into account nearest neighbour 0-Cu, Cu-Cu and 0-0 interactions, long range Coulomb interactions and the electronic polarizability of both the oxygen and the copper ions. The results are compared with the data obtained from ultrasound, infrared, Raman and inelastic neutron scattering measurements. The in...

0 Dynamics of lattice kinks

We consider a class of Hamiltonian nonlinear wave equations governing a field defined on a spatially discrete one dimensional lattice, with discreteness parameter, d = h −1 , where h > 0 is the lattice spacing. The specific cases we consider in detail are the discrete sine-Gordon (SG) and discrete φ 4 models. For finite d and in the continuum limit (d → ∞) these equations have static kink-like ...