Materials characterisation by angle-resolved scanning transmission electron microscopy.
Materials characterisation by angle-resolved scanning transmission electron microscopy.
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材料通过角度分辨扫描透射电子显微镜表征。
DOI:
10.1038/srep37146
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发表时间:
2016-11-16
影响因子:
4.6
通讯作者:
Potapov P
中科院分区:
文献类型:
--
作者:
Müller-Caspary K;Oppermann O;Grieb T;Krause FF;Rosenauer A;Schowalter M;Mehrtens T;Beyer A;Volz K;Potapov P
Solid-state properties such as strain or chemical composition often leave characteristic fingerprints in the angular dependence of electron scattering. Scanning transmission electron microscopy (STEM) is dedicated to probe scattered intensity with atomic resolution, but it drastically lacks angular resolution. Here we report both a setup to exploit the explicit angular dependence of scattered intensity and applications of angle-resolved STEM to semiconductor nanostructures. Our method is applied to measure nitrogen content and specimen thickness in a GaNxAs1−x layer independently at atomic resolution by evaluating two dedicated angular intervals. We demonstrate contrast formation due to strain and composition in a Si- based metal-oxide semiconductor field effect transistor (MOSFET) with GexSi1−x stressors as a function of the angles used for imaging. To shed light on the validity of current theoretical approaches this data is compared with theory, namely the Rutherford approach and contemporary multislice simulations. Inconsistency is found for the Rutherford model in the whole angular range of 16–255 mrad. Contrary, the multislice simulations are applicable for angles larger than 35 mrad whereas a significant mismatch is observed at lower angles. This limitation of established simulations is discussed particularly on the basis of inelastic scattering.
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影响因子:
2.2
作者:
E, H.;MacArthur, K. E.;Nellist, P. D.
通讯作者:
Nellist, P. D.
影响因子:
4.6
作者:
Migunov V;Ryll H;Zhuge X;Simson M;Strüder L;Batenburg KJ;Houben L;Dunin-Borkowski RE
通讯作者:
Dunin-Borkowski RE
DOI:
10.1098/rspa.1947.0064
发表时间:
1947-01-01
影响因子:
--
作者:
HUANG, K
通讯作者:
HUANG, K
DOI:
10.1107/s0108767391000375
发表时间:
1991-05-01
期刊:
ACTA CRYSTALLOGRAPHICA SECTION A
影响因子:
--
作者:
LOANE, RF;XU, PR;SILCOX, J
通讯作者:
SILCOX, J
影响因子:
2.2
作者:
HAIDER, M;EPSTEIN, A;BOULIN, C
通讯作者:
BOULIN, C