Absolute Structure from Scanning Electron Microscopy.

Scientific Reports
Ulrich BurkhardtAimo Winkelmann

Abstract

The absence of centrosymmetry in chiral and polar crystal structures is the reason for many technical relevant physical properties like optical birefringence or ferroelectricity. Other chirality related properties that are actually intensively investigated are unconventional superconductivity or unusual magnetic ordering like skyrmions in materials with B20 structure. Despite the often close crystal structure - property relation, its detection is often challenging due to superposition of domains with different absolute structure e.g. chirality. Our investigations of high quality CoSi crystals with B20 structure by both complementary methods X- ray (volume sensitive) and electron backscatter diffraction (EBSD) (surface sensitive) results the consistent assignment of the chirality and reveal fundamental differences in their sensitivity to chirality. The analysis of the surface of a CoSi crystal with domains of different chirality show the high spatial resolution of this method which opens the possibility to analyze the chirality in microstructures of technical relevant materials like thin films and catalysts.

References

Jan 1, 1995·Acta Crystallographica. Section A, Foundations of Crystallography·R H Blessing
May 31, 2003·Nature Materials·Robert M Hazen, David S Sholl
Nov 25, 2003·Acta Crystallographica. Section B, Structural Science·Haruyuki InuiKazuo Ishizuka
Nov 28, 2006·Ultramicroscopy·Aimo WinkelmannPeter Parbrook
Oct 10, 2007·Chirality·H D Flack, G Bernardinelli
Dec 2, 2014·Ultramicroscopy·Aimo Winkelmann, Gert Nolze
Jan 9, 2015·Acta Crystallographica. Section C, Structural Chemistry·George M Sheldrick
Apr 19, 2016·Nature Materials·Romain GautierKenneth R Poeppelmeier
Dec 29, 2017·Journal of the American Chemical Society·Aliaksandr V YakutovichCarlo A Pignedoli
Mar 22, 2019·Nature·Daniel S SanchezM Zahid Hasan

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Citations

May 16, 2021·Science Advances·Ulrich BurkhardtYuri Grin
Jul 19, 2021·Journal of Microscopy·Aimo WinkelmannCarol Trager-Cowan

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Methods Mentioned

BETA
electron
X-ray
electron diffraction
X
-ray
transmission electron microscopy
electron scattering
ray

Software Mentioned

SHELX
WinCSD

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