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Strain and composition mapping of epitaxial nanostructures

Publication ,  Journal Article
Cionca, CN; Riposan, A; Kumah, DP; Husseini, NS; Walko, DA; Yacoby, Y; Millunchick, JM; Clarke, R
Published in: Applied Physics Letters
April 24, 2008

We have used surface x-ray diffraction and a direct method of phase reconstruction to obtain subangström resolution maps of an ion-beam milled In0.27 Ga0.73 AsGaAs (001) thin film exhibiting three-dimensional (3D) epitaxial nanostructures. The 3D electron density was calculated based on the diffraction pattern along the Bragg rods measured with synchrotron radiation, from which the chemical composition, strain profile, and average nanostructure shape were extracted. The film maintained a wetting layer exhibiting a sharp strain gradient, which extended into the substrate. Atop the wetting layer, the ion-beam milled islands possessed an apical shape and were depleted in indium. © 2008 American Institute of Physics.

Duke Scholars

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

April 24, 2008

Volume

92

Issue

15

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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Cionca, C. N., Riposan, A., Kumah, D. P., Husseini, N. S., Walko, D. A., Yacoby, Y., … Clarke, R. (2008). Strain and composition mapping of epitaxial nanostructures. Applied Physics Letters, 92(15). https://doi.org/10.1063/1.2908214
Cionca, C. N., A. Riposan, D. P. Kumah, N. S. Husseini, D. A. Walko, Y. Yacoby, J. M. Millunchick, and R. Clarke. “Strain and composition mapping of epitaxial nanostructures.” Applied Physics Letters 92, no. 15 (April 24, 2008). https://doi.org/10.1063/1.2908214.
Cionca CN, Riposan A, Kumah DP, Husseini NS, Walko DA, Yacoby Y, et al. Strain and composition mapping of epitaxial nanostructures. Applied Physics Letters. 2008 Apr 24;92(15).
Cionca, C. N., et al. “Strain and composition mapping of epitaxial nanostructures.” Applied Physics Letters, vol. 92, no. 15, Apr. 2008. Scopus, doi:10.1063/1.2908214.
Cionca CN, Riposan A, Kumah DP, Husseini NS, Walko DA, Yacoby Y, Millunchick JM, Clarke R. Strain and composition mapping of epitaxial nanostructures. Applied Physics Letters. 2008 Apr 24;92(15).

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

April 24, 2008

Volume

92

Issue

15

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences