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Ultrafast Terahertz Probe of Transient Evolution of Charged and Neutral Phase of Photoexcited Electron-hole Gas in Monolayer Semiconductor
Xuefeng Liu, Qingqing Ji, Zhihan Gao +5
We investigate the dynamical formation of excitons from photoexcited electron-hole plasma and its subsequent decay dynamics in monolayer MoS2 grown by chemical vapor deposition usi…
Spectroscopic evidence for negative electronic compressibility in a quasi-three-dimensional spin-orbit correlated metal
Junfeng He, T. Hogan, Thomas R. Mion +20
Negative compressibility is a sign of thermodynamic instability of open or non-equilibrium systems. In quantum materials consisting of multiple mutually coupled subsystems, the com…
Ultrafast Charge Transfer in Atomically Thin MoS2/WS2 Heterostructures
Xiaoping Hong, Jonghwan Kim, Su-Fei Shi +7
Van der Waals heterostructures have recently emerged as a new class of materials, where quantum coupling between stacked atomically thin two-dimensional (2D) layers, including grap…
Quasi-freestanding monolayer heterostructure of graphene and hexagonal boron nitride on Ir(111) with a chiral boundary
Mengxi Liu, Yuanchang Li, Pengcheng Chen +10
Monolayer lateral heterostructure of graphene and hexagonal boron nitride (h-BNC) has attracted a growing attention mainly due to its tunable band-gap character and unique physical…
Directly grown monolayer MoS2 on Au foils as efficient hydrogen evolution catalysts
Jianping Shi, Donglin Ma, Gao-Feng Han +8
Synthesis of monolayer MoS2 is essential for fulfilling the potential of MoS2 in catalysis, optoelectronics and valleytronics, etc. Herein, we report for the first time the scalabl…