2026/03/24 by Kunxiang Li, Yi-Xiang Wang
Physics and Astronomy · #Strong Light-Matter Interactions #Semiconductor Quantum Structures and Devices #Quantum and electron transport phenomena
paper · pdf · doi:10.1103/z248-gt6g
The Landau quantization space is based on the respective motion of the electron and hole in a magnetic field and can provide a new route to understand the bound exciton behaviors observed in the experiments. In this paper, we study the two-dimensional exciton properties of monolayer WSe2 in both real space and Landau quantization space. Focusing on the excitons of zero center-of-mass momentum, we calculate its energy spectrum in both spaces, with the results agreeing well with each other. We then obtain the diamagnetic coefficients and root-mean-square radius, which are consistent with the available s state data in the experiment. More importantly, in the exciton state nl, we find that the dominant electron-hole pair component may shift with the magnetic field and the Coulomb interactions, and reveal that the magnetic field will drive the dominant component to be the free electron-hole pair \ne=n+l-1,nh=n-1\, whereas the Coulomb interactions drives it to be the pair of the lower index.