The effect of temperature on the lifetime and Shannon entropy of a magnetopolaron in a RbCl triangular quantum dot

Tiotsop, M.; Fotué, A. J.; Fautso, G.K.; Kenfack, S. C.; Mainimo, E.; Fotsin, Hilaire Bertrand; Fai, Lukong Cornelius

doi:10.1016/j.cjph.2016.08.004

Cited by 9 publications

(2 citation statements)

References 20 publications

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“…21 Experimental data indicate a dressing time of the confined exciton to be of the order of 1 picosecond and a decay time (of order of 100 picosecond) being shorter than the radiative recombination time ($ 1 ns) at absolute-zero temperature. 22 Also, there are theoretical 23,24 and experimental 25,26 studies on decay rates, called lifetime of quasi-particulate states. Electron-phonon scattering influences the lifetime of excited electronic states and hole states, especially for the former.…”

Section: Introductionmentioning

confidence: 99%

Dynamics and Decoherence of Exciton Polaron in Monolayer Transition Metal Dichalcogenides

Kenfack-Sadem

Teguimfouet

Kenfack-Jiotsa

et al. 2021

Journal of Elec Materi

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The dynamics and decoherence of excitonic polaron in a two-dimensional monolayer transition metal dichalcogenides (TMDCs) in quantum dot have been investigated using a variational method. We focused on confinement and temperature effects on dynamics properties and decoherence of exciton polaron, and found that the entropy increases with increasing temperature and dot radius. We observed that due to temperature the lifetime decreases and exciton or polaron can exits independently in the system. The high mobility of exciton-polaron decreases when enhancing the temperature and dot radius. We show that the optical absorption of photon starts when the photon energy is twice the phonon energy. Among the TMDCs studied, we observed the lowest entropy for WS 2 , the longest lifetime for MoSe 2 , the highest mobility for MoS 2 and the greatest absorption for MoS 2 . We have also determined the ranges of decoherence for each property, and it appears that the increase in temperature, dot radius and photon energy does not favor decoherence. It is seen that, in the decoherence phase, the system has lower disorder, higher amplitude of lifetime, mobility and absorption.

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Section: Introductionmentioning

confidence: 99%

Dynamics and Decoherence of Exciton Polaron in Monolayer Transition Metal Dichalcogenides

Kenfack-Sadem

Teguimfouet

Kenfack-Jiotsa

et al. 2021

Journal of Elec Materi

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“…Meanwhile, researchers are recently interested in the thermodynamic properties of quantum dots because the thermodynamics properties of nanostructures are a fascinating subject in physics science. [23][24][25][26][27][28][29][30][31] For more information on this subject, please refer to Refs. [32][33][34][35][36][37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Probability density and oscillating period of magnetopolaron in parabolic quantum dot in the presence of Rashba effect and temperature*

Chen¹,

Shao²

2021

Chinese Phys. B

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We study the property of magnetopolaron in a parabolic quantum dot under the Rashba spin–orbit interaction (RSOI) by adopting an unitary transformation of Lee–Low–Pines type and the variational method of Pekar type with and without considering the temperature. The temporal spatial distribution of the probability density and the relationships of the oscillating period with the RSOI constant, confinement constant, electron–phonon coupling strength, phonon wave vector and temperature are discussed. The results show that the probability density of the magnetopolaron in the superposition of the ground and first excited state takes periodic oscillation (T 0/period) in the presence or absence of temperature. Because of the RSOI, the oscillating period is divided into different branches. Also, the results indicate that the oscillating period increases (decreases) when the RSOI constant, electron-phonon coupling strength and phonon wave vector (the confinement constant) increase in a proper temperature, and the temperature plays a significant role in determining the properties of the polaron.

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Study of Extensive and Nonextensive Entropy of RbCl Quantum Well Qubit in an Asymmetric Gaussian Potential

Habibinejad

Ghanbari

2021

J Low Temp Phys

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The effect of temperature on the lifetime and Shannon entropy of a magnetopolaron in a RbCl triangular quantum dot

Cited by 9 publications

References 20 publications

Dynamics and Decoherence of Exciton Polaron in Monolayer Transition Metal Dichalcogenides

Dynamics and Decoherence of Exciton Polaron in Monolayer Transition Metal Dichalcogenides

Probability density and oscillating period of magnetopolaron in parabolic quantum dot in the presence of Rashba effect and temperature*

Study of Extensive and Nonextensive Entropy of RbCl Quantum Well Qubit in an Asymmetric Gaussian Potential

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