http://www.cnr.it/ontology/cnr/individuo/prodotto/ID305889
Nanometer-scale tomographic reconstruction of three-dimensional electrostatic potentials in GaAs/AlGaAs core-shell nanowires (Articolo in rivista)
- Type
- Label
- Nanometer-scale tomographic reconstruction of three-dimensional electrostatic potentials in GaAs/AlGaAs core-shell nanowires (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.90.125404 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Lubk A.; Wolf D.; Prete P.; Lovergine N.; Niermann T.; Sturm S.; Lichte H. (literal)
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- http://www.scopus.com/inward/record.url?eid=2-s2.0-84907002014&partnerID=q2rCbXpz (literal)
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- ISI Web of Science (WOS) (literal)
- Scopu (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Triebenberg Laboratory, Institute of Structure Physics, Technische Universität Dresden, Dresden, 01062, Germany; IMM-CNR, Lecce Research Unit, S.P. 6 Lecce-Monteroni, Lecce, I-73100, Italy; Dipartimento di Ingegneria dell'Innovazione, Università Del Salento, S.P. 6 Lecce-Monteroni, Lecce, I-73100, Italy; Institut für Optik und Atomare Physik, Technische Universität Berlin, Straße des 17. Juni 135, Berlin, 10623, Germany (literal)
- Titolo
- Nanometer-scale tomographic reconstruction of three-dimensional electrostatic potentials in GaAs/AlGaAs core-shell nanowires (literal)
- Abstract
- We report on the development of electron holographic tomography towards a versatile potential measurement technique, overcoming several limitations, such as a limited tilt range, previously hampering a reproducible and accurate electrostatic potential reconstruction in three dimensions. Most notably, tomographic reconstruction is performed on optimally sampled polar grids taking into account symmetry and other spatial constraints of the nanostructure. Furthermore, holographic tilt series acquisition and alignment have been automated and adapted to three dimensions. We demonstrate 6 nm spatial and 0.2 V signal resolution by reconstructing various, previously hidden, potential details of a GaAs/AlGaAs core-shell nanowire. The improved tomographic reconstruction opens pathways towards the detection of minute potentials in nanostructures and an increase in speed and accuracy in related techniques such as x-ray tomography. (literal)
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