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Valley excitons in two-dimensional semiconductors
Hongyi Yu, Xiaodong Cui, Xiaodong Xu +1
Monolayer group-VIB transition metal dichalcogenides have recently emerged as a new class of semiconductors in the two-dimensional limit. The attractive properties include: the vis…
Observation of intervalley quantum interference in epitaxial monolayer WSe2
Hongjun Liu, Jinglei Chen, Hongyi Yu +8
Monolayer (ML) transition metal dichalcogenides (TMDs) have been attracting great research attentions lately for their extraordinary properties, in particular the exotic spin-valle…
Anomalous light cones and valley optical selection rules of interlayer excitons in twisted heterobilayers
Hongyi Yu, Yong Wang, Qingjun Tong +2
We show that, because of the inevitable twist and lattice mismatch in heterobilayers of transition metal dichalcogenides, interlayer excitons have six-fold degenerate light cones a…
Population pulsation resonances of excitons in monolayer MoSe2 with sub 1 μeV linewidth
John R. Schaibley, Todd Karin, Hongyi Yu +9
Monolayer transition metal dichalcogenides, a new class of atomically thin semiconductors, possess optically coupled 2D valley excitons. The nature of exciton relaxation in these s…