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Even denominator fractional quantum Hall states at an isospin transition in monolayer graphene
A. A. Zibrov, E. M. Spanton, H. Zhou +4
Magnetic fields quench the kinetic energy of two dimensional electrons, confining them to highly degenerate Landau levels. In the absence of disorder, the ground state at partial L…
Optical spectroscopy of excited exciton states in MoS2 monolayers in van der Waals heterostructures
C. Robert, M. A. Semina, F. Cadiz +12
The optical properties of MoS2 monolayers are dominated by excitons, but for spectrally broad optical transitions in monolayers exfoliated directly onto SiO2 substrates detailed in…
Imaging electron flow from collimating contacts in graphene
Sagar Bhandari, Gil-Ho Lee, Kenji Watanabe +3
The ballistic motion of electrons in graphene encapsulated in hexagonal boron nitride (hBN) promises exciting opportunities for electron-optics devices. A narrow electron beam is d…
RF-quantum capacitance of the topological insulator Bi2Se3 in the bulk depleted regime for field-effect transistors
A. Inhofer, J. Duffy, M. Boukhicha +9
A Metal-dielectric-topological insulator capacitor device based on hBN-encapsulated CVD grown Bi2Se3 is realized and investigated in the radio frequency regime. The RF quantum capa…
Even denominator fractional quantum Hall state in bilayer graphene
J. I. A. Li, C. Tan, S. Chen +5
The multi-component nature of bilayer graphene (BLG), together with the ability to controllably tune between the various ground state orders, makes it a rich system in which to exp…
Charged excitons in monolayer WSe: experiment and theory
E. Courtade, M. Semina, M. Manca +13
Charged excitons, or X-trions, in monolayer transition metal dichalcogenides have binding energies of several tens of meV. Together with the neutral exciton X they domi…