Different from a single quantum well, band mixing in the DQW generates bonding and antibonding states, whose wave functions have different spatial symmetry. By applying a time-dependent electric potential to the two well regions simultaneously, Floquet sidebands are formed, which constitutes additional...
In a linear fragment M-X-X (M-Y-Z), the metal orbitals have larger off-diagonal matrix elements |β*| with the antibonding MO's than |β| with the bonding MO's. The model predicts that the vacant antibonding molecular states typically play the dominant role in bond activation, ...
We calculate hole energies of the bonding and antibonding states in coupled quantum wires using 6-band kp model. It is shown that hole ground state changes character from a bonding to an antibonding orbital with increasing inter-wire distances. This effect is a consequence of the enhancement of...
As we’ll see, it’s quite common for electrons to occupy antibonding states – albeit for brief periods of time – without the molecule being destroyed. Electrons are small (1/1840 the mass of a proton) and nuclei are heavy; an electron can zip up to an antibonding state and back down...
The chemical bond and solid‐state physics Here I will describe a new definition of ionicity, derived from spectroscopically obtained transition energies between bonding and antibonding states of ... Phillips,C James - 《Physics Today》 被引量: 43发表: 1970年 Symmetry properties and band structure...
We investigate the two lowest single-particle hole states in the double quantum dots made of two vertically coupled Ge/Si nanoclusters (quantum-dot molecules), using a six-band \mathbf{k\,{\bm\cdot}\, p} model. A bonding-antibonding ground-state transition is observed with an increasing int...
While nonbonding bands comprise d states of both and symmetry components, bonding and antibonding ds states originate exclusively from the -to-s orbital interactions. Due to the slight N p admixture, the relatively narrow band of nonbonding d states shows reversed tetrahedral splitting similar to ...
A pseudogap in the electronic energy density of states at the Fermi level separating the bonding and the antibonding states indicates significant electronic stability of tetragonal TaX (X = P, As).The reflectivity spectra show almost non-selective behavior over a wide range of photon energy ...
Bonding-antibonding and plasmon bands of the Cu Kβ X-ray spectrum from a polycrystalline beryllium scatterer 来自 Elsevier 喜欢 0 阅读量: 23 作者:D Papademitriou,D Miliotis 摘要: A recent X-ray inelastic scattering spectrum of polycrystalline beryllium using Cu Kα radiation showed two peaks ...
The interpretation of these SN and SeN containing structures has been an outstanding challenge for some time. The antibonding (π*) singly occupied molecular orbital (SOMO) of the radical is the source of two-electron multicenter bonding (2e/mc). Preferred conformations thus can be traced back ...