Abstract
We study in this paper, the dynamic and decoherence of polaron in transition metal dichalcogenides (TMDs) under electric field using Lee–Low Pines (LLP) method. We derived the fundamental and first excited states energies of polaron, the mobility in the two states and the lifetime of polaron. Due to the polaron’s superposition states in TMDs, the qubit is formed and then the decoherence of polaron qubit is observed throughout spontaneous emission of phonon. Transition frequency, density probability and entropy are also investigated in order to evaluate the decoherence phenomenon. Our results show that, electric field increases the polaron energies and mobility but reduces the lifetime of polaron in TMDs monolayer. Among the chosen TMDs, the polaron moves freely and lives long in WS2 monolayer. We found that electric field allows the transfer of information, destroys decoherence of polaron state and also allows to control the state of a system.
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Nguepnang, J.V., Teguimfouet, A.K., Kenfack-Sadem, C. et al. Polaron dynamic and decoherence in transition metal dichalcogenides under electric field. Indian J Phys 96, 2001–2010 (2022). https://doi.org/10.1007/s12648-021-02158-2
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DOI: https://doi.org/10.1007/s12648-021-02158-2