Coexisting spin and Rabi oscillations at intermediate time regimes in electron transport through a photon cavity

Publisher's version (útgefin grein) In this work, we theoretically model the time-dependent transport through an asymmetric double quantum dot etched in a two-dimensional wire embedded in a far-infrared (FIR) photon cavity. For the transient and the intermediate time regimes, the current and th...

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Bibliographic Details
Published in:Beilstein Journal of Nanotechnology
Main Authors: Gudmundsson, Vidar, Gestsson, Hallmann, Abdullah, Nzar, Tang, Chi-Shung, Manolescu, Andrei, Moldoveanu, Valeriu
Other Authors: Science Institute (UI), Raunvísindastofnun (HÍ), Tækni- og verkfræðideild (HR), School of Science and Engineering (RU), Verkfræði- og náttúruvísindasvið (HÍ), School of Engineering and Natural Sciences (UI), Háskólinn í Reykjavík, Reykjavik University, Háskóli Íslands, University of Iceland
Format: Article in Journal/Newspaper
Language:English
Published: 2019
Subjects:
Electron transport
Interactions
Photon cavity
Photon-dressed electron states
Time dependent
Oscillations
Markov processes
Rafeindir
Ljóseindir
Tími
Sveiflufræði
Markovferli
Skammtafræði
Rafsegulfræði
Iceland
Online Access:https://hdl.handle.net/20.500.11815/1863
https://doi.org/10.3762/bjnano.10.61
Description
Summary:Publisher's version (útgefin grein) In this work, we theoretically model the time-dependent transport through an asymmetric double quantum dot etched in a two-dimensional wire embedded in a far-infrared (FIR) photon cavity. For the transient and the intermediate time regimes, the current and the average photon number are calculated by solving a Markovian master equation in the dressed-states picture, with the Coulomb interaction also taken into account. We predict that in the presence of a transverse magnetic field the interdot Rabi oscillations appearing in the intermediate and transient regime coexist with slower non-equilibrium fluctuations in the occupation of states for opposite spin orientation. The interdot Rabi oscillation induces charge oscillations across the system and a phase difference between the transient source and drain currents. We point out a difference between the steady-state correlation functions in the Coulomb blocking and the photon-assisted transport regimes. The Research Fund of the University of Iceland, the Icelandic Research Fund, grant No. 163082-051, and the Icelandic Infrastructure Fund. CST acknowledges support from Ministry of Science and Technology of Taiwan under grant No. 106-2112-M-239-001-MY3. V. M. acknowledges financial support by the CNCS-UEFISCDI Grant PN-III-P4-ID-PCE-2016-0084. The computations were performed on resources provided by the Icelandic High Performance Computing Centre at the University of Iceland. The initial version of the manuscript was placed on the preprint server arXiv as: (arXiv: 1809.06930v1 [cond-mat.mes-hall]). "Peer Reviewed"

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