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Resonant Zener tunnelling via zero-dimensional states in a narrow gap diode

Di Poala, D. M.; Kesaria, M.; Makarovsky, Oleg; Velichko, A.; Eaves, Laurence; Mori, N.; Krier, A.; Patanè, Amalia

Authors

D. M. Di Poala

M. Kesaria

Oleg Makarovsky oleg.makarovsky@nottingham.ac.uk

A. Velichko

Laurence Eaves

N. Mori

A. Krier

Amalia Patanè



Abstract

Interband tunnelling of carriers through a forbidden energy gap, known as Zener tunnelling, is a phenomenon of fundamental and technological interest. Its experimental observation in the Esaki p-n semiconductor diode has led to the first demonstration and exploitation of quantum tunnelling in a condensed matter system. Here we demonstrate a new type of Zener tunnelling that involves the resonant transmission of electrons through zero-dimensional (0D) states. In our devices, a narrow quantum well of the mid-infrared (MIR) alloy In(AsN) is placed in the intrinsic (i) layer of a p-i-n diode. The incorporation of nitrogen in the quantum well creates 0D states that are localized on nanometer lengthscales. These levels provide intermediate states that act as “stepping stones” for electrons tunnelling across the diode and give rise to a negative differential resistance (NDR) that is weakly dependent on temperature. These electron transport properties have potential for the development of nanometre-scale non-linear components for electronics and MIR photonics.

Journal Article Type Article
Journal Scientific Reports
Print ISSN 2045-2322
Electronic ISSN 2045-2322
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 6
Article Number e32039
APA6 Citation Di Poala, D. M., Kesaria, M., Makarovsky, O., Velichko, A., Eaves, L., Mori, N., …Patanè, A. (in press). Resonant Zener tunnelling via zero-dimensional states in a narrow gap diode. Scientific Reports, 6, https://doi.org/10.1038/srep32039
DOI https://doi.org/10.1038/srep32039
Publisher URL http://www.nature.com/articles/srep32039
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by/4.0





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