@article{5c229d477a504f789768828f90c00275,
title = "Atomic resolution mapping of interfacial intermixing and segregation in InAs/GaSb superlattices: A correlative study",
abstract = "We combine quantitative analyses of Z-contrast images with composition analyses employing atom probe tomography (APT) correlatively to provide a quantitative measurement of atomic scale interfacial intermixing in an InAs/GaSb superlattice (SL). Contributions from GaSb and InAs in the Z-contrast images are separated using an improved image processing technique. Correlation with high resolution APT composition analyses permits an examination of interfacial segregation of both cations and anions and their incorporation in the short period InAs/GaSb SL. Results revealed short, intermediate, and long-range intermixing of In, Ga, and Sb during molecular beam epitaxial growth and their distribution in the SL.",
author = "Honggyu Kim and Yifei Meng and Rouvi{\'e}re, {Jean Luc} and Dieter Isheim and Seidman, {David N.} and Zuo, {Jian Min}",
note = "Funding Information: This work was supported by U.S. Army Research Office (Grant No. Army W911NF-10-1-0524 and monitored by Dr. William Clark) through the MURI program. In addition, the 300 kV STEM observation at Grenoble was supported by Nanoscience Foundation, France. The LEAP tomography system was purchased and upgraded with funding from NSF-MRI (DMR-0420532) and ONR-DURIP (N00014-0400798, N00014-0610539, and N00014-0910781) grants. The authors also gratefully acknowledge the Initiative for Sustainability and Energy at Northwestern (ISEN) for grants to upgrade the capabilities of NUCAPT. The atom-probe tomography work was also supported by the National Science Foundation's MRSEC program (DMR-0520513) and made use of its Shared Facilities at the Materials Research Center of Northwestern University. We thank Dr. Amy Liu of IQE for providing samples.",
year = "2013",
month = mar,
day = "14",
doi = "10.1063/1.4794193",
language = "English (US)",
volume = "113",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics Publising LLC",
number = "10",
}