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High-Contrast Electro-Optic Modulation of a Photonic Crystal Nanocavity by Electrical Gating of Graphene
Xuetao Gan, Ren-Jye Shiue, Yuanda Gao +8
We demonstrate a high-contrast electro-optic modulation of a photonic crystal nanocavity integrated with an electrically gated monolayer graphene. A high quality (Q) factor air-slo…
Observation of tightly bound trions in monolayer MoS2
Kin Fai Mak, Keliang He, Changgu Lee +4
Two-dimensional (2D) atomic crystals, such as graphene and transition-metal dichalcogenides, have emerged as a new class of materials with remarkable physical properties. In contra…
Layer breathing modes in few-layer graphene
Chun Hung Lui, Tony F. Heinz
Layer-layer coupling plays a critical role in defining the physical properties of few-layer graphene (FLG). With respect to vibrations, the interlayer coupling is predicted to crea…
Control of valley polarization in monolayer MoS2 by optical helicity
Kin Fai Mak, Keliang He, Jie Shan +1
Electronic and spintronic devices rely on the fact that free charge carriers in solids carry electric charge and spin, respectively. There are, however, other properties of charge…
Observation of out-of-plane vibrations in few-layer graphene
Chun Hung Lui, Leandro M. Malard, SukHyun Kim +4
We report the observation of layer breathing mode (LBM) vibrations in few-layer graphene (FLG) samples of thickness from 2 to 6 layers, exhibiting both Bernal (AB) and rhombohedral…
Water-Gated Charge Doping of Graphene Induced by Mica Substrates
Jihye Shim, Chun Hung Lui, Taeg Yeoung Ko +4
We report on the existence of water-gated charge doping of graphene deposited on atomically flat mica substrates. Molecular films of water in units of ~0.4 nm-thick bilayers were f…