We propose an analog quantum simulation of small-polaron physics using a one-dimensional system of trapped ions acted upon by off-resonant standing waves. This system, envisioned as an array of microtraps, in the single-excitation case allows the realization of the antiadiabatic regime of the Holstein model. We show that the strong excitation-phonon coupling regime, characterized by the formati...

We study the electron-induced secondary electron emission of insulating targets by a Monte-Carlo simulation method. The most important collision mechanisms in the energy domain considered are investigated. The usual approximations apparently overestimate the elastic collision rate and empirical corrections are proposed. The self-trapping of the charges is explained by the polarization of the su...

Superconducting SrTiO 3−δ was obtained by annealing single crystalline SrTiO3 samples in ultra high vacuum. An analysis of the V (I) characteristics revealed very small critical currents Ic which can be traced back to a unavoidable doping inhomogeneity. R(T) curves were measured for a range of magnetic fields B at I ≪ Ic, thereby probing only the sample regions with highest doping level. The re...