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Coulomb potential screening via charged carriers and charge-neutral dipoles/excitons in two-dimensional case
Ke Xiao, Chi-Ming Kan, Stuart. S. P. Parkin +1
With the shrinking of dimensionality, Coulomb interactions play a distinct role in two-dimensional (2D) semiconductors owing to the reduced dielectric screening in the out-of-plane…
Exciton-exciton Interaction in Monolayer MoSe from Mutual Screening of Coulomb Binding
Ke Xiao, Tengfei Yan, Chengxin Xiao +7
The potential for low-threshold optical nonlinearity has received significant attention in the fields of photonics and conceptual optical neuron networks. Excitons in two-dimension…
Ferromagnetism in 2D Vanadium Diselenide
Xiong Wang, Dian Li, Zejun Li +3
Two-dimensional (2D) Van der Waals ferromagnets carry the promise of ultimately miniature spintronics and information storage devices. Among the newly discovered 2D ferromagnets al…
Determination of the Sign of g factors for Conduction Electrons Using Time-resolved Kerr Rotation
C. L. Yang, Junfeng Dai, W. K. Ge +1
The knowledge of electron g factor is essential for spin manipulation in the field of spintronics and quantum computing. While there exist technical difficulties in determining the…
Observation of Exciton-Phonon Sideband in Individual Metallic Single-Walled Carbon Nanotubes
Hualing Zeng, Hongbo Zhao, Fu-Chun Zhang +1
Single-walled carbon nanotubes (SWCNTs) are quasi-one-dimensional systems with poor Coulomb screening and enhanced electron-phonon interaction, and are good candidates for excitons…