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16 papers · 2 filters
Giant Valley-Zeeman Splitting from Spin-Singlet and Spin-Triplet Interlayer Excitons in WSe2/MoSe2 Heterostructure
Tianmeng Wang, Shengnan Miao, Zhipeng Li +9
Transition metal dichalcogenides (TMDCs) heterostructure with a type II alignment hosts unique interlayer excitons with the possibility of spin-triplet and spin-singlet states. How…
Composite fermions in a wide quantum well in the vicinity of the filling factor 1/2
I. L. Drichko, I. Yu. Smirnov, A. V. Suslov +5
Using acoustic method we study dependences of transverse AC conductance, , on magnetic field, temperature and the amplitude of AC electric field in a wide (75 nm) quantum wel…
Temperature dependence of photoluminescence lifetime of atomically thin WSe2 layer
Aleksandra Łopion, Mateusz Goryca, Tomasz Smoleński +5
At cryogenic temperatures, the photoluminescence spectrum of monolayer WSe2features a num-ber of lines related to the recombination of so-called localized excitons. The intensity o…
Momentum-Dark Intervalley Exciton in Monolayer Tungsten Diselenide Brightened via Chiral Phonon
Zhipeng Li, Tianmeng Wang, Chenhao Jin +13
Inversion symmetry breaking and three-fold rotation symmetry grant the valley degree of freedom to the robust exciton in monolayer transition metal dichalcogenides (TMDCs), which c…
Probing the Electronic Structure of Graphene Near and Far from the Fermi Level via Planar Tunneling Spectroscopy
John L. Davenport, Zhehao Ge, Junyan Liu +12
Scanning tunneling spectroscopy (STS) has yielded significant insight on the electronic structure of graphene and other two-dimensional (2D) materials. STS directly measures a fund…
Valley and Zeeman Splittings in Multilayer Epitaxial Graphene Revealed by Circular Polarization Resolved Magneto-infrared Spectroscopy
Y. Jiang, Z. Lu, J. Gigliotti +7
Circular polarization resolved magneto-infrared studies of multilayer epitaxial graphene (MEG) are performed using tunable quantum cascade lasers in high magnetic fields up to 17.5…