Unit Cell Structure of Crystal Polytypes in InAs and InSb Nanowires

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Bibtex

@article{801b6ce4a1f74e93b5c52ef6fd640ad8,
title = "Unit Cell Structure of Crystal Polytypes in InAs and InSb Nanowires",
abstract = "The atomic distances in hexagonal polytypes of III-V compound semiconductors differ from the values expected from simply a change of the stacking sequence of (111) lattice planes. While these changes were difficult to quantify so far, we accurately determine the lattice parameters of zinc blende, wurtzite, and 4H polytypes for InAs and InSb nanowires, using X-ray diffraction and transmission electron microscopy. The results are compared to density functional theory calculations. Experiment and theory show that the occurrence of hexagonal bilayers tend to strech the distances of atomic layers parallel to the c-axis and to reduce the in-plane distances compared to those in zinc blende. The change of the lattice parameters scales linearly with the hexagonality of the polytype, defined as the fraction of bilayers with hexagonal character within one unit cell.",
keywords = "Nanowires, polytypes, crystal structure, X-ray diffraction, density, functional theory",
author = "Dominik Kriegner and Christian Panse and Bernhard Mandl and {Dick Thelander}, Kimberly and Mario Keplinger and Persson, {Johan M.} and Philippe Caroff and Daniele Ercolani and Lucia Sorba and Friedhelm Bechstedt and Julian Stangl and Guenther Bauer",
year = "2011",
doi = "10.1021/nl1041512",
language = "English",
volume = "11",
pages = "1483--1489",
journal = "Nano Letters",
issn = "1530-6992",
publisher = "The American Chemical Society (ACS)",
number = "4",

}