Conductance peak density in nanowires

We present a complete numerical calculation and an experimental data analysis of the universal conductance fluctuations in quasi-one-dimensional nanowires. The conductance peak density model, introduced in nanodevice research by Ramos et al. [Phys. Rev. Lett. 107, 176807 (2011)], is applied successf...

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Veröffentlicht in:Physical review. B 2018-10, Vol.98 (15), p.155407, Article 155407
Hauptverfasser: Verçosa, T., Doh, Yong-Joo, Ramos, J. G. G. S., Barbosa, A. L. R.
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Sprache:eng
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Zusammenfassung:We present a complete numerical calculation and an experimental data analysis of the universal conductance fluctuations in quasi-one-dimensional nanowires. The conductance peak density model, introduced in nanodevice research by Ramos et al. [Phys. Rev. Lett. 107, 176807 (2011)], is applied successfully to obtain the coherence length of InAs nanowire magnetoconductance and we prove its equivalence with correlation methods. We show the efficiency of the method and therefore a prominent alternative to obtain the phase-coherence length. The peak density model can be similarly applied to spintronic setups, graphene, and topological isolators where phase-coherence length is a relevant experimental parameter.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.98.155407