Low bias negative differential conductance and reversal of current in coupled quantum dots in different topological configurations

Devi, Sarita; Brogi, Bharat Bhushan; Ahluwalia, P. K.; Chand, Shyam

doi:10.1016/j.physb.2018.04.007

Cited by 5 publications

(2 citation statements)

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“…The non‐equilibrium Green's function (NEGF) method combined with DFT approach is a popular scheme for thermoelectric property characterizations in QDs . It can exactly describe the ballistic thermal transport and gives the maximum thermal conductance of a material.…”

Section: Commonly Used Computational Methods In Quantum Dot Simulationsmentioning

confidence: 99%

“…The non-equilibrium Green's function (NEGF) method combined with DFT approach is a popular scheme for thermoelectric property characterizations in QDs. [51][52][53][54] It can exactly describe the ballistic thermal transport and gives the maximum thermal conductance of a material. When the system size of a nanomaterial is smaller than its phonon mean free path, the thermal transport can be regarded as ballistic, which can be described by the Landauer formula [55] I ¼…”

Section: First Principlesmentioning

confidence: 99%

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Overview of Computational Simulations in Quantum Dots

Yang

et al. 2019

Israel Journal of Chemistry

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Quantum dots (QDs) are semiconductor nanocrystals that exhibit exceptional properties not found in their bulk counterparts. They have attracted extensive academic and industrial attentions due to their quantum confinement effects and unique photophysical properties. Computational approaches such as first principles and classical molecular dynamics simulations are indispensable tools in both scientific studies and industrial applications of QDs. In this review, the state‐of‐the‐art progress in computational simulations of optical, electronic and thermal properties of QDs is summarized and discussed. First, the physics of QDs in low dimensional materials are comprehensively reviewed. Then, the theoretical basis and practical applications of two main computational methods are presented. Properties of QDs revealed by computational studies are summarized respectively. Finally, the paper was concluded with comments on future directions in computational modeling of QDs.

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Section: Commonly Used Computational Methods In Quantum Dot Simulationsmentioning

confidence: 99%