Work

Orientation effects in the electronic and optical properties of germanium quantum wires

Year: 2004

Type: article

Abstract: We have performed first-principles calculations in order to analyze the influence of spatial orientation on the electronic band structure and optical properties of hydrogenated germanium quantum wires. A quantum confinement-induced direct band gap appears for the (110)-oriented wires, whereas the (100)- and (111)-oriented wires are characterized by an indirect band gap. For the same wire-effective size, an anisotropy in the fundamental band gap ${E}_{g}$ with respect to the wire orientation is observed. For (110)-oriented wires, the imaginary part of the dielectric function shows a pronounced peak in the visible energy range with strong dimensionality and polarization dependence.

Source: Physical Review B

DOI: 10.1103/physrevb.70.035317

Authors: Alexandre N. Kholod, V. L. Shaposhnikov, N. Sobolev, V. E. Borisenko, F. Arnaud D’Avitaya, Stefano Ossicini

Institutions: University of Aveiro, Belarusian State University of Informatics and Radioelectronics, Centre National de la Recherche Scientifique, University of Modena and Reggio Emilia

Language: English

Topic: Semiconductor Quantum Structures and Devices

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2050922011

FWCI: 2.586

Cites: 38

Cited by: 42

Related to: 10