A new model for band offsets in lattice-matched heterojunctions is presented along with a novel definition of the interface dipole which avoids any reference to an ideal interface. The model is derived only from the charge densities of the bulk constituents and naturally predicts the independence of the offsets on interface geometry. It is in excellent agreement with accurate first-principles pseudopotential calculations for (GaAs)3/(AlAs)3 grown in the (001), (110), and (111) directions and with available experimental data.
Band Offsets in Lattice-Matched Heterojunctions: A Model and First-Principles Calculations for GaAs/AlAs / Baldereschi, A.; Baroni, S.; Resta, Raffaele. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 61:6(1988), pp. 734-737. [10.1103/PhysRevLett.61.734]
Band Offsets in Lattice-Matched Heterojunctions: A Model and First-Principles Calculations for GaAs/AlAs
Baroni, S.;Resta, Raffaele
1988-01-01
Abstract
A new model for band offsets in lattice-matched heterojunctions is presented along with a novel definition of the interface dipole which avoids any reference to an ideal interface. The model is derived only from the charge densities of the bulk constituents and naturally predicts the independence of the offsets on interface geometry. It is in excellent agreement with accurate first-principles pseudopotential calculations for (GaAs)3/(AlAs)3 grown in the (001), (110), and (111) directions and with available experimental data.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
