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Electrical tuning of layer-polarized exciton gases in WSe2 bilayers
Zefang Wang, Yi-Hsin Chiu, Kevin Honz +2
Van der Waals heterostructures formed by stacking two-dimensional atomic crystals are a unique platform for exploring new phenomena and functionalities. Interlayer excitons, bound…
Valley Magnetoelectricity in Single-Layer MoS2
Jieun Lee, Zefang Wang, Hongchao Xie +2
Magnetoelectric (ME) effect, the phenomenon of inducing magnetization by application of an electric field or vice versa, holds great promise for magnetic sensing and switching appl…
Strongly interaction-enhanced valley magnetic response in monolayer WSe2
Zefang Wang, Kin Fai Mak, Jie Shan
Coulomb interaction between electrons lies at the heart of magnetism in solids. In contrast to conventional two-dimensional (2D) systems, electrons in monolayer transition metal di…
Valley-spin polarized Landau levels in a monolayer semiconductor
Zefang Wang, Jie Shan, kin Fai Mak
Electrons in monolayer transition metal dichalcogenides (TMDs) possess both the valley and spin degree of freedom. These internal quantum degrees of freedom have provided an ideal…
Probing the spin-polarized electronic band structure in monolayer transition metal dichalcogenides by optical spectroscopy
Zefang Wang, Liang Zhao, Kin Fai Mak +1
We study the electronic band structure in the K/K' valleys of the Brillouin zone of monolayer WSe2 and MoSe2 by optical reflection and photoluminescence spectroscopy on dual-gated…