Many efforts have been made to derive procedures for the calculation and analysis of cumulants describing the thermodynamic properties and anharmonic
effects or phonon-phonon interactions in temperature-dependent XAFS [2-28] using the classical approach [3-6] and quantum theory [7-28].
The positive and negative signs of the coefficient of the anharmonic
potential give a correction to the linear potential.
The collected and experimental data are well fitted with (2) and (3) based on the anharmonic
phonon flow through molecular-sized junctions," Physical Review B: Condensed Matter and Materials Physics, vol.
Marty et al., "Giant anharmonic
phonon scattering in PbTe," Nature Materials, vol.
3 is typical for the coupling of PL emission transition to slightly anharmonic
thermal resistivity of dielectric crystals at low temperatures," Physical Review B, vol.
At about 0.25 s, this anharmonic
behavior is overcome by slower decay characteristics, with the latter being consistent with the simple model of damped harmonic motion.
Truman, "Feynman maps, Cameron-Martin formulae and anharmonic
oscillators," Annales de l'Institut Henri Poincare.
3.1) rather than the computed anharmonic
ZPEs that were used in those studies.
Throughout the text, Kazakov argues from a perspective of insight into the application of quantum theory to the physical problems that arise from the interpretation of molecular spectra, and the physics of anharmonic
The third potential [V.sub.AH] is single-well but anharmonic
, which allows us to investigate a different quantum mechanical effect other than that caused by tunnelling.