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Electrically Tunable Excitonic Light Emitting Diodes based on Monolayer WSe2 p-n Junctions
Jason S. Ross, Philip Klement, Aaron M. Jones +9
Light-emitting diodes are of importance for lighting, displays, optical interconnects, logic and sensors. Hence the development of new systems that allow improvements in their effi…
Etched graphene single electron transistors on hexagonal boron nitride in high magnetic fields
A. Epping, S. Engels, C. Volk +4
We report on the fabrication and electrical characterisation of etched graphene single electron transistors (SETs) of various sizes on hexagonal boron nitride (hBN) in high magneti…
Screening Charged Impurities and Lifting the Orbital Degeneracy in Graphene by Populating Landau Levels
Adina Luican-Mayer, Maxim Kharitonov, Guohong Li +7
We report the observation of an isolated charged impurity in graphene and present direct evidence of the close connection between the screening properties of a 2D electron system a…
Optical Probing of Electronic Interaction between Graphene and Hexagonal Boron Nitride
Gwanghyun Ahn, Hye Ri Kim, Taeg Yeoung Ko +5
Even weak van der Waals (vdW) adhesion between two-dimensional solids may perturb their various materials properties owing to their low dimensionality. Although the electronic stru…
Etched graphene quantum dots on hexagonal boron nitride
S. Engels, A. Epping, C. Volk +6
We report on the fabrication and characterization of etched graphene quantum dots (QDs) on hexagonal boron nitride (hBN) and SiO2 with different island diameters. We perform a stat…
Switching of intra-orbital spin excitations in electron-doped iron pnictide superconductors
Soshi Iimura, Satoru Matsuishi, Masashi Miyakawa +10
We investigate the doping dependence of the magnetic excitations in two-superconducting-dome-system LaFeAsO1-xDx. Using inelastic neutron scattering, spin fluctuations at different…