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arXiv · 1702.08802

Spin-valley resolved photon-assisted tunneling in carbon nanotube double quantum dots

E. N. Osika·B. Szafran
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Abstract

We consider the photon-assisted tunneling (PAT) and the Landau-Zener-Stueckelberg (LZS) interference for double quantum dots induced electrostatically along a semiconducting carbon nanotube. An atomistic tight-binding approach and the time-dependent configuration interaction method are employed for description of the systems of a few confined electrons and holes. We reproduce the patterns of the LZS interference recently observed for the quantum double dots describing transport across hole-localized states. Moreover, we indicate that for charge configurations for which the ground-state is Pauli blocked PAT can be used for resolution of the transitions that involve spin-flip or intervalley transitions without the spin-valley conserving background signal.

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E. N. Osika, B. Szafran. 2017-02-28. Spin-valley resolved photon-assisted tunneling in carbon nanotube double quantum dots. https://doi.org/10.1103/physrevb.95.205305

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