Inter-Coulombic Decay in Laterally Arranged Quantum Dots Controlled by Polarized Lasers

Haller, A.; Peláez, Daniel; Bande, Annika

doi:10.1021/acs.jpcc.9b01250

Cited by 18 publications

(22 citation statements)

References 66 publications

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“…Compared to the young prediction of ICEC, however, inter-Coulombic decay is already well established in various fields, among them helium droplets, 39 hollow atoms, 40 as well as biological systems, 41,42 and nanostructures as fullerenes 43 or quantum films. 44,45 Different ways to achieve ICD resonance have been studied: namely radiation, 46 , α-particle, 42 and ultimately electron impact, [27][28][29]47 the pathway we are discussing hereafter.…”

Section: Introductionmentioning

confidence: 99%

Quantum size effect affecting environment assisted electron capture in quantum confinements

Molle

Berikaa

Pont

et al. 2019

The Journal of Chemical Physics

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Ultrafast inter-Coulombic electron capture (ICEC) has been established as an important energy-transfer process in open paired-quantum-dot systems which can mediate between entrapment of free-moving electrons and release of trapped ones elsewhere by long-range electron-electron interaction within nanowires. Previous studies indicated ICEC enhancement through population and secondary decay of two-center resonant bound states, the latter known as inter-Coulomb decay (ICD). This study investigates the quantum-size effect of single-and double-electron bound states in an established model of a quasi-onedimensional nanowire with two embedded confinement sites, represented by a pair of Gaussian wells. We analyze the ICEC related electron flux density as a function of confinement size and are able to clearly identify two distinct capture channels: a direct longranged electron-electron impulse, and a conversion of kinetic energy to electron-electron correlation energy with consecutive ICD. The overlay of both channels make ICEC extremely likely while nanowires are a strong candidate for the next miniaturization step of integrated-circuit components.

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Section: Introductionmentioning

confidence: 99%

Quantum size effect affecting environment assisted electron capture in quantum confinements

Molle

Berikaa

Pont

et al. 2019

The Journal of Chemical Physics

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“… 234 The π-pulse was also shown to be more efficient than the nπ-pulses and the effects of direct and multiphoton ionization were investigated in refs ( 236 and 237 ). In ref ( 472 ), the ICD rate in the case of quantum dots embedded in a wire was compared with the ICD rate in QDs embedded in thin semiconductor films. Expanding electronic continuum from one dimension to two dimensions leads to the increase in ICD rate.…”

Section: Systems and Applicationsmentioning

confidence: 99%

Interatomic and Intermolecular Coulombic Decay

et al. 2020

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Interatomic or intermolecular Coulombic decay (ICD) is a nonlocal electronic decay mechanism occurring in weakly bound matter. In an ICD process, energy released by electronic relaxation of an excited atom or molecule leads to ionization of a neighboring one via Coulombic electron interactions. ICD has been predicted theoretically in the mid nineties of the last century, and its existence has been confirmed experimentally approximately ten years later. Since then, a number of fundamental and applied aspects have been studied in this quickly growing field of research. This review provides an introduction to ICD and draws the connection to related energy transfer and ionization processes. The theoretical approaches for the description of ICD as well as the experimental techniques developed and employed for its investigation are described. The existing body of literature on experimental and theoretical studies of ICD processes in different atomic and molecular systems is reviewed.

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“…Furthermore, we will consider the degree of confinement, as we are aware that rates are more sensitive to energy-level changes when the continuum electron is more confined [9,25]. For realistic quantum dots it is going to be illustrative how strong an additional potential can affect the processes in different classes of QDs.…”

Section: Introductionmentioning

confidence: 99%

An Impurity Effect for the Rates of the Interparticle Coulombic Decay

Guskov

Langkabel

Berg

et al. 2020

Quarks

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The interparticle Coulombic decay is a synchronized decay and ionization phenomenon occurring on two separated and only Coulomb interaction coupled electron binding sites. This publication explores how drastically small environmental changes in between the two sites, basically impurities, can alter the ionization properties and process rate, although the involved electronic transitions remain unaltered. A comparison among the present electron dynamics calculations for the example of different types of quantum dots, accommodating a one- or a two-dimensional continuum for the outgoing electron, and the well-investigated atomic and molecular cases with three-dimensional continuum, reveals that the impurity effect is most pronounced the stronger that electron is confined. This necessarily leads to challenges and opportunities in a quantum dot experiment to prove the interparticle Coulombic decay.

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Inter-Coulombic Decay in Laterally Arranged Quantum Dots Controlled by Polarized Lasers

Cited by 18 publications

References 66 publications

Quantum size effect affecting environment assisted electron capture in quantum confinements

Quantum size effect affecting environment assisted electron capture in quantum confinements

Interatomic and Intermolecular Coulombic Decay

An Impurity Effect for the Rates of the Interparticle Coulombic Decay

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