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Title: Combining experiment and optical simulation in coherent X-ray nanobeam characterization of Si/SiGe semiconductor heterostructures

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.4955043· OSTI ID:1340989

The highly coherent and tightly focused x-ray beams produced by hard x-ray light sources enable the nanoscale characterization of the structure of electronic materials but are accompanied by significant challenges in the interpretation of diffraction and scattering patterns. X-ray nanobeams exhibit optical coherence combined with a large angular divergence introduced by the x-ray focusing optics. The scattering of nanofocused x-ray beams from intricate semiconductor heterostructures produces a complex distribution of scattered intensity. We report here an extension of coherent xray optical simulations of convergent x-ray beam diffraction patterns to arbitrary x-ray incident angles to allow the nanobeam diffraction patterns of complex heterostructures to be simulated faithfully. These methods are used to extract the misorientation of lattice planes and the strain of individual layers from synchrotron x-ray nanobeam diffraction patterns of Si/SiGe heterostructures relevant to applications in quantum electronic devices. The systematic interpretation of nanobeam diffraction patterns from semiconductor heterostructures presents a new opportunity in characterizing and ultimately designing electronic materials.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; FG02-04ER46147; FG02-03ER46028
OSTI ID:
1340989
Alternate ID(s):
OSTI ID: 1356344; OSTI ID: 1421259
Journal Information:
Journal of Applied Physics, Vol. 120, Issue 1; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 8 works
Citation information provided by
Web of Science

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Cited By (3)

Stressor-layer-induced elastic strain sharing in SrTiO 3 complex oxide sheets journal February 2018
Electrode-induced lattice distortions in GaAs multi-quantum-dot arrays journal March 2019
Stressor-Layer-Induced Elastic Strain Sharing in SrTiO3 Complex Oxide Sheets text January 2020