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Intrinsic and Extrinsic Defect-related Excitons in TMDCs
Kyrylo Greben, Sonakshi Arora, Moshe G. Harats +1
We investigate an excitonic peak appearing in low-temperature photoluminescence of monolayer transition metal dichalcogenides (TMDCs), which is commonly associated with defects and…
Dynamics and efficient conversion of excitons to trions in non-uniformly strained monolayer WS
Moshe G. Harats, Jan N. Kirchhof, Mengxiong Qiao +2
We investigate the transport of excitons and trions in monolayer semiconductor WS subjected to controlled non-uniform mechanical strain. We actively control and tune the strain…
Microstructure and Elastic Constants of Transition Metal Dichalcogenide Monolayers from Friction and Shear Force Microscopy
Xiaomin Xu, Thorsten Schultz, Ziyu Qin +10
Optical and electrical properties of two-dimensional transition metal dichalcogenides (TMDCs) grown by chemical vapor deposition (CVD) are strongly determined by their microstructu…
Giant Tunable Mechanical Nonlinearity in Graphene-Silicon Nitride Hybrid Resonator
Rajan Singh, Arnab Sarkar, Chitres Guria +4
High quality factor mechanical resonators have shown great promise in developing classical or quantum technologies. Simultaneously, progress has been made in developing controlled…
Atomic-Resolution Visualization and Doping Effects of Complex Structures in Intercalated Bilayer Graphene
Jason P. Bonacum, Andrew O'Hara, De-Liang Bao +9
Molecules intercalating two-dimensional (2D) materials form complex structures that have been mostly characterized by spatially averaged techniques. Here we use aberration-correcte…