Cyclotron Resonance in Dual-Gated Bilayer Graphene
ORAL
Abstract
We report observations of cyclotron resonance in boron nitride-encapsulated, dual-gated bilayer graphene by way of transmission infrared magnetospectroscopy. The inter-Landau level transitions -2 → 1 and 1 → 2 are studied at a fixed magnetic field of 13 T as a function of the Landau level filling factor, ν, and the layer symmetry-breaking perpendicular electric displacement field, D. Varying D at ν = 4 yields a direct and high-resolution measurement of the optical bandgap in bilayer graphene at low energies. For increasing D at ν = 0 we observe a varying number of transitions as the K and K’ valleys diverge, while a sharp change in the CR energies signals the transition to a layer polarized state at finite D. A detailed description of the data requires consideration of band parameters beyond the lowest order inter- and intra-layer hopping terms. Measurements at D = 0 reveal a pronounced electron-hole asymmetry and many-body interaction effects as ν is varied.
–
Presenters
Jordan Russell
Washington University, St. Louis
Authors
Jordan Russell
Washington University, St. Louis
Jesse Balgley
Washington University, St. Louis
Physics, Washington University in St. Louis
Yashika Kapoor
Washington University, St. Louis
Takashi Taniguchi
National Institute for Materials Science, Japan
National Institute for Material Science
National Institute for Materials Science
National Institute for Materials Science, Tsukuba
Research Center for Functional Materials, NIMS
nims
Advanced Materials Laboratory, National Institute for Materials Science
National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
NIMS
National Institute for Material Science - Japan
NIMS Tsukuba
National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.
National Institute for Materials Science (NIMS)
National Institute for Materials Science,Tsukuba, Ibaraki 305-0047, Japan
Advanced Materials Laboratory, NIMS, Japan
National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
National Institute of Materials Science
National Institute for Materials Science, University of Tsukuba
National Institute for Materials Science, Tsukuba, Japan
National Institue for Material Science, Tsukuba
Advanced Materials Laboratory, NIMS
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba 305-0044, Japan
Advanced Matrials Lab, NIMS
National Institute for Material Science, Tsukuba, Japan
National institute for materials science
NIMS-Tsukuba
NIMS, Japan
National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
NIMS Japan
National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
Advanced Materials Laboratory, National Institute of Materials Science
Advanced Materials Laboratory, National Institute for Materials Science 1-1 Namiki, Tsukuba, 305-0044, Japan
National Institute of Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Material Science (Japan)
Physics, NIMS
National Institute of Materials Science, Japan
National Institute of Materials Science, Tsukuba, Ibaraki 305-0044, Japan
NIMS - Tsukuba
Kenji Watanabe
National Institute for Materials Science, Japan
National Institute for Material Science
National Institute for Materials Science
National Institute for Materials Science, Tsukuba
Research Center for Functional Materials, NIMS
nims
Advanced Materials Laboratory, National Institute for Materials Science
National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
NIMS
National Institute for Material Science - Japan
NIMS Tsukuba
National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.
National Institute for Materials Science (NIMS)
National Institute for Materials Science,Tsukuba, Ibaraki 305-0047, Japan
Advanced Materials Laboratory, NIMS, Japan
National Institute for Materials Science,1-1 Namiki, Tsukuba, 305-0044, Japan
National Institute of Materials Science
National Institute for Materials Science, University of Tsukuba
National Institute for Materials Science, Tsukuba, Japan
National Institute for Material Science, Japan
National Institue for Material Science, Tsukuba
Advanced Materials Laboratory, NIMS
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba 305-0044, Japan
Advanced Matrials Lab, NIMS
National Institute for Material Science, Tsukuba, Japan
National institute for materials science
NIMS-Tsukuba
NIMS, Japan
National Institute for Materials Science, Namiki Tsukuba Ibaraki, Japan
NIRM
Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Japan
NIMS Japan
National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan
Research Center for Functional Materials, National Institute for Materials Science, Tsukuba, Ibaraki, Japan
Advanced Materials Laboratory, National Institute of Materials Science
Advanced Materials Laboratory, National Institute for Materials Science 1-1 Namiki, Tsukuba, 305-0044, Japan
National Institute of Material Science, 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Material Science (Japan)
Physics, NIMS
National Institute of Materials Science, Japan
National Institute of Materials Science (NIMS)
National Institute of Materials Science, Tsukuba, Ibaraki 305-0044, Japan
