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

作     者：E. N. Osika B. Szafran 

作者机构：AGH University of Science and Technology Faculty of Physics and Applied Computer Science al. Mickiewicza 30 30-059 Kraków Poland 

出 版 物：《Physical Review B》 (Phys. Rev. B)

年 卷 期：2017年第95卷第20期

页      面：205305-205305页

核心收录：

基　　金：This work was supported by the National Science Centre according to decision DEC-2013/11/B/ST3/03837 

主　　题：Coulomb blockade Optical spin injection Quantum interference effects Semiconductors Double quantum dots 

摘      要：We consider 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 to describe systems of a few confined electrons and holes. We reproduce the patterns of the LZS interference recently observed for 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.