Norbert Karl

TL;DR: In this article, a brief review is given on different experimental methods that can either directly measure charge carrier mobilities, or at least lead to an estimate, for high purity single crystals, a steep increase of mobilities towards low temperature with the consequence of nonlinear transport and final velocity saturation at elevated electric fields has been traced back to temperature-dependent electron and hole masses approaching the free electron mass at low temperature.

TL;DR: It will be shown that the low-temperature results can be understood in terms of a standard band-model description, whereas the continuation of the experimental temperature-dependence law (\ensuremath{\mu}\ensure Math{\propto}${T}^{n}$) (for both holes and electrons) into the high-tem temperature regime remains a problem for future theoretical work.

TL;DR: In this article, the authors demonstrate that high charge carrier mobility is an inherent property of organic molecular crystals at low temperatures and demonstrate that charge carrier transport measurements are a sensitive tool for the analytical characterization of high purity organic molecular crystal.

TL;DR: The structural aspect of the temperature-induced neutral-to-ionic transition in the mixed-stack charge-transfer complex TTF-p-chloranil is directly analyzed using results obtained from neutron-scattering experiments as discussed by the authors.

TL;DR: In this article, a comparison of the 10 resolved maxima of the tunneling current with the molecular structure leads to question the conventional model description of tunneling, leading to the question of whether tunneling can be viewed as a linear process.