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Intervalley coupling by quantum dot confinement potentials in monolayer transition metal dichalcogenides
Gui-Bin Liu, Hongliang Pang, Yugui Yao +1
Monolayer transition metal dichalcogenides (TMDs) offer new opportunities for realizing quantum dots (QDs) in the ultimate two-dimensional (2D) limit. Given the rich control possib…
Topological edge states in single- and multi-layer BiBr
Jin-Jian Zhou, Wanxiang Feng, Gui-Bin Liu +1
Topological edge states at the boundary of quantum spin Hall (QSH) insulators hold great promise for dissipationless electron transport. The device application of topological edge…
Nonlinear valley and spin currents from Fermi pocket anisotropy in 2D crystals
Hongyi Yu, Yue Wu, Gui-Bin Liu +2
Controlled flow of spin and valley pseudospin is key to future electronics exploiting these internal degrees of freedom of carriers. Here we discover a universal possibility for ge…
Bright excitons in monolayer transition metal dichalcogenides: from Dirac cones to Dirac saddle points
Hongyi Yu, Guibin Liu, Pu Gong +2
In monolayer transition metal dichalcogenides, tightly bound excitons have been discovered with a valley pseudospin that can be optically addressed through polarization selection r…