Strain and shape of epitaxial InAs/InP nanowire superlattice measured by grazing incidence X-ray techniques
Författare
Summary, in English
Quantitative structural information about epitaxial arrays of nanowires are reported for a InAs/InP longitudinal heterostructure grown by chemical beam epitaxy on an InAs (111)(B) substrate. Grazing incidence X-ray diffraction allows the separation of the nanowire contribution from the substrate overgrowth and gives averaged information about crystallographic phases, epitaxial relationships (with orientation distribution), and strain. In-plane strain in homogeneities, intrinsic to the nanowires geometry, are measured and compared to atomistic simulations. Small-angle X-ray scattering evidences the hexagonal symmetry of the nanowire cross-section and provides a rough estimate of size fluctuations.
Avdelning/ar
Publiceringsår
2007
Språk
Engelska
Sidor
2596-2601
Publikation/Tidskrift/Serie
Nano Letters
Volym
7
Issue
9
Dokumenttyp
Artikel i tidskrift
Förlag
The American Chemical Society (ACS)
Ämne
- Nano Technology
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1530-6992