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arXiv · 1604.08519

Tailoring the core electron density in modulation-doped Core-Multi-Shell nanowires

Fabrizio Buscemi·Miquel Royo·Guido Goldoni·Andrea Bertoni
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Abstract

We show how a proper radial modulation of the composition of core-multi-shell nanowires critically enhances the control of the free-carrier density in the high-mobility core with respect to core-single-shell structures, thus overcoming the technological difficulty of fine tuning the remote doping density. We calculate the electron population of the different nanowire layers as a function of the doping density and of several geometrical parameters by means of a self-consistent Schrödinger-Poisson approach: Free carriers tend to localize in the outer shell and screen the core from the electric field of the dopants.

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Fabrizio Buscemi, Miquel Royo, Guido Goldoni, Andrea Bertoni. 2016-04-28. Tailoring the core electron density in modulation-doped Core-Multi-Shell nanowires. https://doi.org/10.1088/0957-4484%2F27%2F19%2F195201

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