Lattice Dynamics

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 model for calcium dynamics.

We present a simplified lattice model to study calcium dynamics in the endoplasmic reticulum membrane. Calcium channels and calcium ions are placed in two interpenetrating square lattices which are connected in two ways: (i) via calcium release and (ii) because transitions between channel states are calcium dependent. The opening or closing of a channel is a stochastic process controlled by two...

Anharmonic Lattice Dynamics in Na

where X is the vector potential. The results obtheory developed here and in SP with which the experiments give qualitative verification is ent-'rely based on the assumption that in the presence of a magnetic field, the Hamiltonian for the surfacestate levels is given by the replacement tained here indicate that this approximation remains valid when cubic terms are involved in the band structure,