What underpins these fields is the need to make direct observations of fundamental charge, spin, and orbital or lattice dynamics
on natural timescales--put simply, to see the motion of electrons and ions as they respond to their environment or to external stimuli.
Bohnen, "Lattice dynamics
and electron-phonon coupling in transition-metal diborides," Physical Review B, vol.
In case of Gd[Mn.sub.2][O.sub.5], magnetoelectric effect and spin-lattice coupling are commonly acknowledged in several investigations [4,10, 12,14]; little is known about the correlations between structural distortion and lattice dynamics
. Infrared spectroscopy demonstrates the local lattice distortion and provides the information about the flexible crystalline lattice.
A more accurate method, the third-order anharmonic lattice dynamics
(ALD) calculation which can predict the intrinsic spectral phonon relaxation times without LWA, was presented by Maradudin and the coworkers [41, 42].
The Type-1 approach concerns a microscopic scale (lattice dynamics
) in the absence of thermodynamic irreversibility.
Chapter topics include crystal structure and chemical bonding, solidification and grown-in defects, lattice statics and lattice dynamics
, point defects, and dislocations and mechanical properties.
Scientists at the NIST Center for Neutron Research (NCNR) and Brookhaven National Lab have an ongoing collaborative program to study the lattice dynamics
(atomic vibrations) in the PZN and PMN relaxor compounds.
The lattice dynamics
of CeSe were investigated by Steiner et al.
Barron, "Free-energy derivatives and structure optimization within quasiharmonic lattice dynamics
," Physical Review B, vol.56, no.
Concentrating on those solids whose structural elements contain conjugated pi-electron systems, they offer chapters covering forces and structures; purification of materials, crystal growth, and preparation of thin films; impurities and defects; molecular and lattice dynamics
in organic molecular crystals; electron excited states, excitons, and energy transfer; structure and dynamics of triplet states; organic semiconductors; organic crystals of high conductivity; organic superconductors; electroluminescence and the pholtovoltaic effect; and molecular electronics.