Hybrid superconductor-semiconductor devices made from self-assembled SiGe nanocrystals on silicon

G. Katsaros, P. Spathis, M. Stoffel, F. Fournel, M. Mongillo, V. Bouchiat, F. Lefloch, A. Rastelli, O. Schmidt, S. De Franceschi, Nature Nanotechnology 5 (2010) 458–464.


Journal Article | Published
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Abstract
The epitaxial growth of germanium on silicon leads to the self-assembly of SiGe nanocrystals by a process that allows the size, composition and position of the nanocrystals to be controlled. This level of control, combined with an inherent compatibility with silicon technology, could prove useful in nanoelectronic applications. Here, we report the confinement of holes in quantum-dot devices made by directly contacting individual SiGe nanocrystals with aluminium electrodes, and the production of hybrid superconductor- semiconductor devices, such as resonant supercurrent transistors, when the quantum dot is strongly coupled to the electrodes. Charge transport measurements on weakly coupled quantum dots reveal discrete energy spectra, with the confined hole states displaying anisotropic gyromagnetic factors and strong spin-orbit coupling with pronounced dependences on gate voltage and magnetic field.
Publishing Year
Date Published
2010-06-01
Journal Title
Nature Nanotechnology
Acknowledgement
We also acknowledge support from the Agence Nationale de la Recherche (through the ACCESS and COHESION projects). G.K. acknowledges further support from the Deutsche Forschungsgemeinschaft (grant no. KA 2922/1-1)
Volume
5
Issue
6
Page
458 - 464
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Cite this

Katsaros G, Spathis P, Stoffel M, et al. Hybrid superconductor-semiconductor devices made from self-assembled SiGe nanocrystals on silicon. Nature Nanotechnology. 2010;5(6):458-464. doi:10.1038/nnano.2010.84
Katsaros, G., Spathis, P., Stoffel, M., Fournel, F., Mongillo, M., Bouchiat, V., … De Franceschi, S. (2010). Hybrid superconductor-semiconductor devices made from self-assembled SiGe nanocrystals on silicon. Nature Nanotechnology, 5(6), 458–464. https://doi.org/10.1038/nnano.2010.84
Katsaros, Georgios, Panayotis Spathis, Mathieu Stoffel, Frank Fournel, Massimo Mongillo, Vincent Bouchiat, François Lefloch, Armando Rastelli, Oliver Schmidt, and Silvano De Franceschi. “Hybrid Superconductor-Semiconductor Devices Made from Self-Assembled SiGe Nanocrystals on Silicon.” Nature Nanotechnology 5, no. 6 (2010): 458–64. https://doi.org/10.1038/nnano.2010.84.
G. Katsaros et al., “Hybrid superconductor-semiconductor devices made from self-assembled SiGe nanocrystals on silicon,” Nature Nanotechnology, vol. 5, no. 6, pp. 458–464, 2010.
Katsaros G, Spathis P, Stoffel M, Fournel F, Mongillo M, Bouchiat V, Lefloch F, Rastelli A, Schmidt O, De Franceschi S. 2010. Hybrid superconductor-semiconductor devices made from self-assembled SiGe nanocrystals on silicon. Nature Nanotechnology. 5(6), 458–464.
Katsaros, Georgios, et al. “Hybrid Superconductor-Semiconductor Devices Made from Self-Assembled SiGe Nanocrystals on Silicon.” Nature Nanotechnology, vol. 5, no. 6, Nature Publishing Group, 2010, pp. 458–64, doi:10.1038/nnano.2010.84.

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