X-ray measurements of the strain and shape of dielectric/metallic wrap-gated InAs nanowires
(2009) In Applied Physics Letters 94(13).- Abstract
- Wrap-gate (111) InAs nanowires (NWs) were studied after HfO2 dielectric coating and Cr metallic deposition by a combination of grazing incidence x-ray techniques. In-plane and out-of-plane x-ray diffraction (crystal truncation rod analysis) allow determining the strain tensor. The longitudinal contraction, increasing with HfO2 and Cr deposition, is significantly larger than the radial dilatation. For the Cr coating, the contraction along the growth axis is quite large (-0.95%), and the longitudinal/radial deformation ratio is >10, which may play a role on the NW transport properties. Small angle x-ray scattering shows a smoothening of the initial hexagonal bare InAs NW shape and gives the respective core/shell thicknesses, which are... (More)
- Wrap-gate (111) InAs nanowires (NWs) were studied after HfO2 dielectric coating and Cr metallic deposition by a combination of grazing incidence x-ray techniques. In-plane and out-of-plane x-ray diffraction (crystal truncation rod analysis) allow determining the strain tensor. The longitudinal contraction, increasing with HfO2 and Cr deposition, is significantly larger than the radial dilatation. For the Cr coating, the contraction along the growth axis is quite large (-0.95%), and the longitudinal/radial deformation ratio is >10, which may play a role on the NW transport properties. Small angle x-ray scattering shows a smoothening of the initial hexagonal bare InAs NW shape and gives the respective core/shell thicknesses, which are compared to flat surface values. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1400773
- author
- Eymery, J. ; Favre-Nicolin, V. ; Fröberg, Linus LU and Samuelson, Lars LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- X-ray diffraction, nanotechnology, indium compounds, III-V semiconductors, compounds, hafnium, dielectric materials, deformation, chromium, coatings, semiconductor heterojunctions, nanowires
- in
- Applied Physics Letters
- volume
- 94
- issue
- 13
- article number
- 131911
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- wos:000264888500022
- scopus:64149120255
- ISSN
- 0003-6951
- DOI
- 10.1063/1.3114369
- language
- English
- LU publication?
- yes
- id
- 8a6be61b-6f70-4a52-a8e4-6a3e2dba9253 (old id 1400773)
- date added to LUP
- 2016-04-01 12:26:07
- date last changed
- 2022-01-27 03:43:59
@article{8a6be61b-6f70-4a52-a8e4-6a3e2dba9253, abstract = {{Wrap-gate (111) InAs nanowires (NWs) were studied after HfO2 dielectric coating and Cr metallic deposition by a combination of grazing incidence x-ray techniques. In-plane and out-of-plane x-ray diffraction (crystal truncation rod analysis) allow determining the strain tensor. The longitudinal contraction, increasing with HfO2 and Cr deposition, is significantly larger than the radial dilatation. For the Cr coating, the contraction along the growth axis is quite large (-0.95%), and the longitudinal/radial deformation ratio is >10, which may play a role on the NW transport properties. Small angle x-ray scattering shows a smoothening of the initial hexagonal bare InAs NW shape and gives the respective core/shell thicknesses, which are compared to flat surface values.}}, author = {{Eymery, J. and Favre-Nicolin, V. and Fröberg, Linus and Samuelson, Lars}}, issn = {{0003-6951}}, keywords = {{X-ray diffraction; nanotechnology; indium compounds; III-V semiconductors; compounds; hafnium; dielectric materials; deformation; chromium; coatings; semiconductor heterojunctions; nanowires}}, language = {{eng}}, number = {{13}}, publisher = {{American Institute of Physics (AIP)}}, series = {{Applied Physics Letters}}, title = {{X-ray measurements of the strain and shape of dielectric/metallic wrap-gated InAs nanowires}}, url = {{http://dx.doi.org/10.1063/1.3114369}}, doi = {{10.1063/1.3114369}}, volume = {{94}}, year = {{2009}}, }