Chemisorption on a quantum-well wire

10.1007/s11451-008-1024-1

“…According to the Anderson-Newns model [14][15][16], the renormalized energy of an electron of an adatom can be represented by the relationship ε a = + U a 〈n〉, where is the energy of an electron of an isolated atom; U is the potential of the intra-atomic Coulomb repulsion; and 〈n〉 is the perturbation of the electron density of the atom due to the interaction with the quantum dot, which is determined by the expression 〈n〉 = . In contrast to the problems considered in our previous papers [6][7][8][9][10], we use the following expression for the renormalized energy of the quantum dot: ε n = + U n 〈N〉. Here, is the energy of the discrete energy state of the quantum dot in the absence of the interaction with the adatom, U n has the meaning of the correlation energy, and 〈N〉 = is the perturbation of the electron density of the quantum dot due to the interaction with the adatom.…”

“…In this respect, investigation of the chemisorption on a quantum dot is of particular interest. The specific features of chemisorption on quantum-well films and quantum-well wires were studied in our earlier works [6][7][8][9][10]. It was demonstrated that the chemisorption energy is an oscillating function of the thickness of films or wires due to the specific features of the density of states of t electrons of a thin film or a wire.…”

“…(10). Equation (10), together with the corresponding equation for the electron of the adatom, enables us to investigate the equilibrium and nonequilibrium properties of the quantum dot-adatom system.…”

On the theory of electronic states of the “epitaxial graphene-quantum-well film” system

“…This is associated with the possi bility of varying the properties of low dimensional structures and also with the fact that these low dimen sional structures can be used to fabricate solid state structures with controllable parameters [16][17][18][19][20], which, in turn, is interesting from the viewpoint of the possibility of producing a controlled effect on the elec tronic states of graphene. It should be noted, however, that the problem of investigation of the "graphenelow dimensional structure" system, as compared to the case of the "graphene-macroscopic structure" system, has a different aspect.…”

“…For the density of states of the substrate, we obtain the expression In the approximation Γ 0, the expression for the density of states of the substrate takes the form (17) By integrating the density of states of the graphene with respect to the energy variable, we obtain the fol lowing expression for the transferred charge:…”