Year: 2019
Type: article
Abstract: We study the cross-section shape and size effects on the valley splitting in PbSe nanowires within the framework of empirical $s{p}^{3}{d}^{5}{s}^{*}$ tight-binding method. We consider idealized prismatic nanowires, grown along [110], with the cross-section shape varying from rectangular (terminated by ${001}$ and ${110}$ facets) to rhombic (terminated mostly by ${111}$ facets). The valley splitting energies have the maximal value (up to hundreds of meV) in rectangular nanowires, while in rhombic ones they are almost absent. The shape dependence is shown to be similar in nanowires with different point symmetry in a wide range of cross-section sizes.
Author: I. D. Avdeev
Institution: Ioffe Institute
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Award: G1542725353
OpenAlex ID: W3141509513