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- W3049533354 abstract "The properties of energy spectrum of excitons in monolayer transition metal dichalcogenides are investigated using a multiband model. In the multiband model we use the excitonic Hamiltonian in the product base of the Dirac single-particle states at the conduction and valence band edges. Following the separation of variables we decouple the corresponding energy eigenvalue system of the first order ODE radial equations rigorously and solve the resulting the second order ODE self-consistently, using the finite difference method, thus we determine the energy eigenvalues of the discrete excitonic spectrum and the corresponding wave functions. We also developed WKB approach to solve the same spectral problem in semiclassical aproximation for the resulting ODE. We compare the results for the energy spectrum and the corresponding eigen-functions forms for WS2 and WSe2 obtained by means of both methods. We also compare our results for the energy spectrum with other theoretical works for excitons, and with available experimental data." @default.
- W3049533354 created "2020-08-21" @default.
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- W3049533354 date "2021-07-01" @default.
- W3049533354 modified "2023-09-27" @default.
- W3049533354 title "Semiclassical approach for excitonic spectrum of Coulomb coupling between two Dirac particles" @default.
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- W3049533354 doi "https://doi.org/10.1098/rspa.2021.0098" @default.
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