It is suggested that this formula can be used to determine the enhancement factors for positron annihilation with core electrons of atoms across the periodic table, and with the localized atomic-like core electrons of condensed matter systems.D. G. Green...
For the earlier transition metals, it is found that the core electrons are more bound at the surface than in the bulk, while for the heavier ones the opposite situation exists. This change of sign of the surface shift depends on the bonding-antibonding division of the d band. To illustrate...
Using the hard sphere electronic liquid model to examine the wavespeed deviations from PREM at the top of the outer core, it appears that a approximately 1.7% decrease in M at the top of the core (along with an 8% decrease in valence electrons z) can explain the wavespeed reduction there...
Meanwhile, the photogenerated electrons would transfer to the GaSb core, which is driven by the built-in electric field of the as-constructed heterostructure NW (namely process II’). As a result, the injected electrons are going to recombine with the holes in the GaSb core (namely process ...
6e, wherein the brightness of each dot represents the intensity associated with the number of electrons per atom (Z) and the number of atoms in the column (that is, sample thickness). As ZPt (78) is significantly higher than ZRu (44), the high STEM intensities near the edge of a ...
First-row transition metal oxides combine the unique properties associated with electrons in d-orbitals with relative abundance in the Earth’s crust compared to other periodic table elements [1], as it is the case for iron oxides that combine the second and third most abundant element with mult...
Therefore, effort is made to provide a small core so that strong evanescent field can easily penetrate into the cladding region and interacts with the free electrons of the metal surface. Again, the diameter of air-holes at the two opposite sides of the core are made smaller intentionally so...
Pankratov, Two-dimensional massless electrons in an inverted contact. JETP Lett. 42, 178–181 (1985) ADS Google Scholar H. Zhang, C.-X. Liu, X.-L. Qi, X. Dai, Z. Fang, S.-C. Zhang, Topological insulators in Bi2Se3, Bi2Te3 and Sb2Te3 with a single Dirac cone on the ...
The free electrons (holes) spontaneously fall into the energy well of the non-doped core NW because of a conduction (valence) band offset at core/shell interface. Dillen et al.17 experimentally incorporated a B-doped layer into the shell of Ge/Si core-shell NWs. They found that the ...
Spectroscopy is indispensable for determining atomic configurations, chemical bondings, and vibrational behaviours, which are crucial information for materials development. Despite their importance, the interpretation of spectra using “human-driven” me