Contribution of bulk and surface phonons to the properties of polaron in a Zn1−CdSe∕ZnSe heterojunction confined in a triangular potential

Djomou, J.-R. D.; Kenfack, S. C.; Fotué, A. J.; Fobasso, M. F. C.; Fai, Lukong Cornelius

doi:10.1016/j.physb.2018.08.023

Cited by 8 publications

(4 citation statements)

References 27 publications

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“…For high values of the magnetic barrier length, the mass variation of the exciton-polaron is higher, owing to the interplay of phonon and the electron (hole). This behavior is in accordance with [77,78]. This result suggests that the length scale of the magnetic barrier can be necessary to tuned the effective mass of exciton polaron in TMD monolayer.…”

Section: Coupling Rangesupporting

confidence: 85%

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Magnetic effect on dynamic and decoherence of exciton polaron in transition metal dichalcogenides

Kenfack-Sadem¹,

Nguepnang²,

Kenfack-Jiotsa³

et al. 2021

Phys. Scr.

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We investigate the dynamics and decoherence of the exciton polaron in a 2D transition metal dichalcogenides modulated by a magnetic field barrier. Using the Huybrechts method and an approximate diagonalization of exciton-phonon operators is performed to derive the fundamental energy, the first excited state energy, the effective mass and the mobility of the exciton polaron. It is found that the system presents robust state energies and the dynamic properties like effective mass is reduced. We show that the motion of exciton-polaron is accelerated by increasing the magnetic barrier length. The transition of the exciton polaron from the valence band to the conduction band is also enhanced by the external field. It is found that the decoherence of exciton polaron can be adjusted by the magnetic field barrier. Our results suggest that the magnetic field barrier (i) enhances the confinement of the electron in the system, (ii) increases mobility and the rate of the decoherence of exciton polaron. The results are in agreement with experimental works.

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Section: Coupling Rangesupporting

confidence: 85%

“…We observe that the greater the magnetic barrier length, the faster the motion of the polaron. This result have been obtained by Djomou et al [77]. To characterize environment that conduct electric current, we need to apply magnetic field in an exciton-polaron system.…”

Section: Coupling Rangementioning

confidence: 52%

Magnetic effect on dynamic and decoherence of exciton polaron in transition metal dichalcogenides

Kenfack-Sadem¹,

Nguepnang²,

Kenfack-Jiotsa³

et al. 2021

Phys. Scr.

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“…However, the theoretical understanding of the influence on the 2D TIs, which are denoted by the QSH insulators is still unclear. Recently, the work on introducing potentials to low-dimensional structures has mostly focused on QWs, and related research is also in the field of quantum dots [23]. As far as we know, many schemes have been proposed for researching on thermodynamic properties in quantum nanostructures, but an investigation of thermal properties in TIs with RSOC and Fermi model-restricted potential has not been carried out.…”

Section: Introductionmentioning

confidence: 99%

“…The behavior can be seen in Figures 4(a) and (b). From expression equation (23), the relation between the HgTe/CdTe QW structure and thermal energy can be easily evaluated . Additionally, under RSOC and quadrangular potential states can also be evaluated from the correlation.…”

mentioning

confidence: 99%

Thermodynamic properties of the 2D generic helical edge states with quadrangular potential effects

Alkan

Akay

2023

Phys. Scr.

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We theoretically studied the generic helical edge state (GHES) with quadrangular potential in the two-dimensional (2D) HgTe/CdTe quantum well (QW) structure. We have specified the thermodynamic properties of the GHES with and without the external geometric potential. On the one hand, we first revealed the heat capacity dependence of the edge modes on the optimum temperatures. It is found that the model offers distorted Fermi lines of edge states but does not vary with the behavior of the heat capacity. In addition, we showed that the quadrangular potential term distorts the Fermi surface and contributes to particle-hole asymmetry.

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Dynamics and Decoherence of Polaron in Monolayer Graphene Under Magnetic Field

et al. 2021

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Contribution of bulk and surface phonons to the properties of polaron in a Zn1−CdSe∕ZnSe heterojunction confined in a triangular potential

Cited by 8 publications

References 27 publications

Magnetic effect on dynamic and decoherence of exciton polaron in transition metal dichalcogenides

Magnetic effect on dynamic and decoherence of exciton polaron in transition metal dichalcogenides

Thermodynamic properties of the 2D generic helical edge states with quadrangular potential effects

Dynamics and Decoherence of Polaron in Monolayer Graphene Under Magnetic Field

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