We present a novel method for the calculation of the local electric field at the emitting surface of a carbon nanotube. The nanotube is simulated by a cylindrical array of touching spheres, each sphere representing an atom of the tube. The electrostatic potential is then a linear combination of...
Local density of states (LDOS) of (a) 4f-states of Pr atom, and (b) 4f, 5d states of Pr, 3d-states of Co, 3p-states of Si atoms in system I. The Fermi level is at E = 0 eV. Full size image According to Kramers theorem, light lanthanides—Ce, Nd, and Sm have an odd num...
confined pore geometry in the catalyst layer (CL). The electrolyte potential\({\psi }_{l}\)at this boundary is set to 0 V to provide a reference for solving the electric field. Due to the continuous flow of fresh 2 M KOH electrolyte into the cathode chamber, an open boundary cond...
serve as a good platform for tuning electronic structure and bandgap under an external strain field [17,124]. Raman and PL spectroscopic techniques have been widely used to estimate the strain-induced changes in the band structure of 2D TMDCs [125,126,127]. Although many studies have introduced...
The same procedure was used to construct Bi-UiO-66 by changing the carboxylate of the BDC linker with an H atom instead of CN group (see method section and SI section S1). To account for the different probable orientations of the BA-CN, two modes were accounted for: (a) parallel to ...
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The change in exciton binding energy arises from the microscopic arrangement around the nitrogen atom. This is illustrated from hydrostatic pressure and uniaxial stress measurements; it also permits an analysis of the nitrogen related isoelectronic complexes found in the alloys. 展开 ...
5a). We stipulate an aperture electric field distribution consisting of two superimposed converging cylindrical wavefronts centered at \({\vec{{{\bf{r}}}_{\left\{R,L\right\}}^{\, \star }\), described by $$\left[\begin{array}{c}{E}_{x}\\ {E}_{y}\end{array}\right]=\frac...
For example, an asymmetric charge distribution creates an electric field gradient (EFG) which couples with the nuclear electric quadrupole moment (Q) of a given probe atom, splitting the nuclear levels. This energy splitting can be measured providing local information. In PAC spectroscopy, one uses...
Indeed, in sufficiently clean samples with suppressed intervalley scattering, applying an in-plane electric field generates non-dissipative counterpropagating valley currents along its transverse direction without a net charge flow, giving rise to what is known as the valley Hall effect (VHE). Indirect...