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Anisotropic band flattening in graphene with 1D superlattices
Yutao Li, Scott Dietrich, Carlos Forsythe +4
Patterning graphene with a spatially-periodic potential provides a powerful means to modify its electronic properties. Dramatic effects have been demonstrated in twisted bilayers w…
Band Structure Engineering of 2D Materials using Patterned Dielectric Superlattices
Carlos Forsythe, Xiaodong Zhou, Takashi Taniguchi +6
The ability to manipulate two-dimensional (2D) electrons with external electric fields provides a route to synthetic band engineering. By imposing artificially designed and spatial…
Ambipolar Landau levels and strong band-selective carrier interactions in monolayer WSe
Martin V. Gustafsson, Matthew Yankowitz, Carlos Forsythe +6
Monolayers (MLs) of transition metal dichalcogenides (TMDs) exhibit unusual electrical behavior under magnetic fields due to their intrinsic spin-orbit coupling and lack of inversi…
Landau level spectroscopy of electron-electron interactions in graphene
C. Faugeras, S. Berciaud, P. Leszczynski +11
We present magneto-Raman scattering studies of electronic inter Landau level excitations in quasi-neutral graphene samples with different strengths of Coulomb interaction. The band…
Tunable Fractional Quantum Hall Phases in Bilayer Graphene
Patrick Maher, Lei Wang, Yuanda Gao +9
Symmetry breaking in a quantum system often leads to complex emergent behavior. In bilayer graphene (BLG), an electric field applied perpendicular to the basal plane breaks the inv…
Measurement of Collective Dynamical Mass of Dirac Fermions in Graphene
Hosang Yoon, Carlos Forsythe, Lei Wang +6
Individual electrons in graphene behave as massless quasiparticles. In surprising twist, it is inferred from plasmonic investigations that collectively excited graphene electrons m…
Hofstadter's butterfly in moire superlattices: A fractal quantum Hall effect
C. R. Dean, L. Wang, P. Maher +12
Electrons moving through a spatially periodic lattice potential develop a quantized energy spectrum consisting of discrete Bloch bands. In two dimensions, electrons moving through…