Each electron in an atom is described by four different quantum numbers. The first three (n, l, m l ) specify the particular orbital of interest, and the fourth (m s ) specifies how many electrons can occupy that orbital. Principal Quantum Number (n) ...
Graphene, the one-atom-thick planar sheets of sp2-bonded carbon atoms that are densely packed in a honeycomb crystal lattice, is rapidly being explored as an alternative material for ORR catalyst supports. It has the following note-worthy advantages [183]: (1) The flexibility and immobilization...
6b), in which the Cu2+ ion is coordinated by two axial Cl– ions and four equatorial OH– ions with its spin residing on the \(d_{x^2 - y^2}\) orbital87. The Cu2+ spins form a 2D kagomé lattice and are coupled to each other by strong superexchange interactions only via the ...
Realizing viable electrocatalytic processes for energy conversion/storage strongly relies on an atomic-level understanding of dynamic configurations on catalyst-electrolyte interface. X-ray absorption spectroscopy (XAS) has become an indispensable tool to in situ investigate dynamic natures of electrocatalysts...
19 (solid line) suggests that other electronic factors such as the donor-atom electronegativity,π-character of Ni-N and Ni-L bonds, orbital reduction factors, etc., may be important and we are pursuing this further. Collectively, this work demonstrates an efficient and predictive model of ...
lattices, from magnetic and orbital order to the metal–insulator transition and the Kondo effect. The emergence of local spins can be seen already in the case of an idealized one-level atom $$\begin{aligned} {\hat{H}}_e=\varepsilon _d \sum _\sigma c^\dagger _{d\sigma } c_{d\...
As in an atomic clock, the phase shift recorded by each atom interferometer depends on the time spent in the excited state, which is related directly to the light travel time across the baseline, namely L/c. A single interferometer of the type described here, e.g., the interferometer at ...
can be that two virtual particles can bend as in a Feynman diagram with a loop – so that they find each other exactly at the right place and with exactly the right momentum to annihilate. Therefore such impossibilities – that would spoil the goal of giving a simplified picture of what ...
(Fig.1c). The red and blue squares are Chern blocks withC = 1, −1, respectively. The chiral edge modes between them and the trivial (white) regions form horizontal and vertical wires, and at each intersection, an electron can go straight or turn either left or right, depending ...
S16). Introducing the spin-orbital coupling (SOC), however, strongly modifies the electronic band structures of the wz monolayers. A significant band splitting induced by the SOC can be observed due to the lack of the inversion symmetry, which is mainly visible at the bands along the Γ−...