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Title: Unit Cell Structure of Crystal Polytypes in InAs and InSb Nanowires
Type: Journal articleJournal article
Participant(s):
Forfatter:  Kriegner, Dominik
Johannes Kepler University Linz, Institute of Semiconductor and Solid State Physics

Forfatter:  Panse, Christian
Friedrich-Schiller-Universität Jena, Institut für Festkörpertheorie und -optik

Forfatter:  Mandl, Bernhard
Johannes Kepler University Linz, Institute of Semiconductor and Solid State Physics

Forfatter:  Dick, Kimberly A.
Lund University, Solid State Physics

Forfatter:  Keplinger, Mario
Johannes Kepler University Linz, Institute of Semiconductor and Solid State Physics

Author:  Persson, Johan Mikael (Cwisno: 55540)
Technical University of Denmark
Email:

Forfatter:  Caroff, Philippe
Lund University, Solid State Physics

Forfatter:  Ercolani, Daniele
Istituto Nanoscienze-CNR and Scuola Normale Superiore, NEST

Forfatter:  Sorba, Lucia
Istituto Nanoscienze-CNR and Scuola Normale Superiore, NEST

Forfatter:  Bechstedt, Friedhelm
Friedrich-Schiller-Universität Jena, Institut für Festkörpertheorie und -optik

Forfatter:  Stangl, Julian
Johannes Kepler University Linz, Institute of Semiconductor and Solid State Physics

Forfatter:  Bauer, Günther
Johannes Kepler University Linz, Institute of Semiconductor and Solid State Physics
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 tends to stretch 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.
Published: in journal: Nano Letters (ISSN: 1530-6984) (DOI: http://dx.doi.org/10.1021/nl1041512), vol: 11, issue: 4, pages: 1483-1489, 2011
DOI:
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