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

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...

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Bibliographic Details
Published in:arXiv.org 2017-02
Main Authors: Osika, E N, Szafran, B
Format: Article
Language:English
Subjects:
Carbon nanotubes
Configuration interaction
Interference
Nanotubes
Quantum dots
Time dependence
Online Access:Get full text
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Summary: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.
ISSN:2331-8422
DOI:10.48550/arxiv.1702.08802