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Tuning many-body interactions in graphene: The effects of doping on excitons and carrier lifetimes
Kin Fai Mak, Felipe H. da Jornada, Keliang He +6
The optical properties of graphene are strongly affected by electron-electron (e-e) and electron-hole (e-h) interactions. Here we tune these many-body interactions through varying…
Competing thermodynamic and dynamic factors select molecular assemblies on a gold surface
Thomas K. Haxton, Hui Zhou, Isaac Tamblyn +5
Controlling the self-assembly of surface-adsorbed molecules into nanostructures requires understanding physical mechanisms that act across multiple length and time scales. By combi…
Controlling the Spontaneous Emission Rate of Monolayer MoS in a Photonic Crystal Nanocavity
Xuetao Gan, Yuanda Gao, Kin Fai Mak +8
We report on controlling the spontaneous emission (SE) rate of a molybdenum disulfide (MoS) monolayer coupled with a planar photonic crystal (PPC) nanocavity. Spatially resolve…
Tunable electronic correlation effects in nanotube-light interactions
Yuhei Miyauchi, Zhengyi Zhang, Mitsuhide Takekoshi +9
Electronic many-body correlation effects in one-dimensional (1D) systems such as carbon nanotubes have been predicted to modify strongly the nature of photoexcited states. Here we…
Intrinsic lineshape of the Raman 2D-mode in freestanding graphene monolayers
Stéphane Berciaud, Xianglong Li, Han Htoon +3
We report a comprehensive study of the two-phonon inter-valley (2D) Raman mode in graphene monolayers, motivated by recent reports of asymmetric 2D-mode lineshapes in freestanding…
Tunable Infrared Phonon Anomalies in Trilayer Graphene
Chun Hung Lui, Emmanuele Cappelluti, Zhiqiang Li +1
Trilayer graphene in both ABA (Bernal) and ABC (rhombohedral) stacking sequences is shown to exhibit intense infrared absorption from in-plane optical phonons. The feature, lying a…