In the semiclassical EOM: v=\frac{\partial \mathcal E}{\hbar \partial k}-\dot k\times \Omega(k),\quad \dot k=-eE-ev\times B Here, \Omega is the Berry curvature (corresponds to anomalous velocity) and \hbar k is the "gauge invariant or mechanical crystal momentum": \hbar k=\...
In order to separate valence and core electron charge densities, one needs an electron probe size that is much smaller than the 1 Å feature size of valence electron orbitals. Achieving this experimentally is currently challenging as state-of-the-art probes are on the order of valence electr...
Charge asymmetry in electron (positron) scattering arises from the interference of the Born amplitude and the box-type amplitude corresponding to two virtual photons exchange. It can be extracted from electron-proton and positron-proton scattering experiments, in the same kinematical conditions. Consideri...
Here, we report RIXS measurements on electron doped LCCO at the Cu{L}_{3}-edge, focusing on charge excitations around the two dimensional Brillouin zone (BZ) center. By using doping-concentration-gradient (combi) films,16we are able to provide finer doping dependence than recent results publi...
The investigated derivatives with electron-withdrawing substituents show favorable performances in terms of these properties. The LUMO levels are greatly stabilized by at least 0.3 eV and these derivatives show the strong absorption from 400 to 700 nm which match with the solar spectra ...
The possibility of studying single-particle nuclear transition charge densities with inelastic electron scattering is discussed and it is pointed out that such experiments lead to valuable information about the nature of the effective charge.'' Calculations of cross sections were carried out for various...
The latter fact suggests that the photoelectrochemical undoping of these polymers observed by us earlier is in fact related to the photoassisted removal of the trapped charge. 展开 关键词: Electron-conducting polymers Polybithiophene Poly-3-methylthiophene Poly-3-phenylthiophene Trapped charge Photo...
The cross sections of the electron capture from a hydrogen atom by a proton or by a helium ion are calculated by the close-coupling (cc) method at high energies up to 5.625 MeV/amu. The cc cross section is always smaller than the Brinkma... K Fujiwara,N Toshima - 《Journal of the ...
The measurements are fitted with an Arrhenius law with an activation energy of 0.42 eV (black line). The blue stars represent the ion diffusion coefficients used in the simulations. Full size image Characterization of electron- and hole-only devices To measure space-charge-limited electron and...
manuscript – by comparing the TA spectra of Y6 blended with two hole accepting species (PTB7-Th and poly-TPD), to reveal the Y6 electron signature. The charge spectrum in neat Y6 closely resembles charge spectra obtained from these measurements (we note that the donor hole signature is ...