We report on in situ magnetoresistance measurements of a 30-nm-wide ferromagnetic nanocontact with simultaneous magnetic imaging in the Lorentz transmission electron microscope. The magnetoresistive measurements are correlated with the micromagnetic configuration of the sample. This allows us to assign characteristic features in the magnetoresistance curves to different magnetic configurations ...

Electron-impact ionization cross sections for diatomic molecules are calculated in a configuration-average distorted-wave method. Core bound orbitals for the molecular ion are calculated using a single-configuration self-consistent-field method based on a linear combination of Slater-type orbitals. The core bound orbitals are then transformed onto a two-dimensional r , numerical lattice from wh...

Oligoacenes C(4n+2)H(2n+4) (n=2,...,6) are studied using a variety of ab initio methods. Density functional theory (DFT) optimized geometries were in good agreement with experiment. Vertical and adiabatic ionization potentials and electron affinities were computed with DFT and it was found that standard exchange-correlation (xc) functionals underestimate ionization potentials in oligoacenes. Po...

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Multiconfiguration Dirac-Hartree-Fock (MCDHF) calculations and relativistic configuration interaction (RCI) calculations were performed for states of the 3l3l′, 3l4l′ and 3s5l configurations in the Mg-like ions Ca IX – As XXII and Kr XXV. Valence and core-valence electron correlation effects are accounted for through large configuration state function expansions. Calculated excitation energies ...

The SLAC A-Line, originally developed to transport electron beams to experiments in End Station A at energies up to 25 GeV, is being upgraded to support a revived fixed target program. In this paper we discuss a proposed new configuration that will transport beams at energies up to 50 GeV. Implementation of this configuration will require the addition of several magnets, the replacement of powe...

We give a detailed description of recent developments in reduced scaling ab initio methods for treating electron correlation in atoms and molecules. Since configuration interaction (CI) is the simplest electron correlation method, it is introduced first and used as a context to describe the familiar local correlation and pseudospectral approximations. The article then goes on to discuss the app...

The B3LYP/6-311+G(d)-SDD method, which considers the relativistic effect of bromine, was adopted for the calculations of the selected polybrominated diphenyl ethers (PBDEs) in the present study, in which the B3LYP/6-311+G(d) method was also applied. The calculated values and experimental data for structural parameters of the selected PBDEs were compared to find the suitable theoretical methods ...

Reduced graphene oxide film was synthesized on a glassy carbon electrode by electro reduction of graphene oxide powders in aqueous solution. Then platinum nano particles were deposited on reduced graphene oxide film that was deposited on the glassy carbon electrode via electro reduction of platinum salt. The Physical morphology of the platinum on reduced graphene oxide film was evaluated by sca...

collinear configuration, in which the laser wave is linearly polarized with electric field E parallel to the initial electron momentum p 0, is the optimal configuration for the relativistic reversal. In that case, the transverse PF reverses its direction when the incident momentum is p0=mc. The reversal effect vanishes in the cases of circular and linear with E p 0 polarizations. We have discov...