Dimensional crossover of polaron dynamics inNb:SrTiO3/SrTiO3superlattices: Possible mechanism of thermopower enhancement

A Possible Enhancement Mechanism of Nuclear Fusion

An enhancing mechanism of nuclear fusions is presented, most part of which is within the framework of the traditional theories. In this mechanism, electron currents play an important role, which are induced by an externally applied field or counterstreams of free electrons which naturally exist inside, surface and outside of bulk metals. At places of electron currents, the electric potential be...

Polaron dynamics in a two-dimensional anharmonic Holstein model

Polaron dynamics in a two-dimensional Holstein-Peierls system.

A semiclassical model for studying charge transport in a two-dimensional molecular lattice is presented and applied to both a well ordered system and a system with disorder. The model includes both intra- and inter-molecular electron-lattice interactions and the focus of the studies is to describe the dynamics of a charge carrier in the system. In particular, we study the dynamics of the system...

Theory of thermopower in two-dimensional graphene

Motivated by recent experiments by Yuri M. Zuev et al. Phys. Rev. Lett. 102, 096807 2009 , Peng Wei et al. Phys. Rev. Lett. 102, 166808 2009 , and Joseph G. Checkelsky et al. Phys. Rev. B 80, 081413 R 2009 , we calculate the thermopower of graphene incorporating the energy dependence of various transport scattering times. We find that scattering by screened charged impurities gives a reasonable...

Dynamics of a Strongly Coupled Polaron

Abstract. We study the dynamics of large polarons described by the Fröhlich Hamiltonian in the limit of strong coupling. The initial conditions are (perturbations of) product states of an electron wave function and a phonon coherent state, as suggested by Pekar. We show that, to leading order on the natural time scale of the problem, the phonon field is stationary and the electron moves accordi...