Interaction-induced shift of the cyclotron resonance of graphene using infrared spectroscopy

Abstract

We report a study of the cyclotron resonance (CR) transitions to and from the unusual $n=0$ Landau level (LL) in monolayer graphene. Unexpectedly, we find the CR transition energy exhibits large (up to 10%) and non-monotonic shifts as a function of the LL filling factor, with the energy being largest at half-filling of the $n=0$ level. The magnitude of these shifts, and their magnetic field dependence, suggests that an interaction-enhanced energy gap opens in the $n=0$ level at high magnetic fields. Such interaction effects normally have limited impact on the CR due to Kohn's theorem [W. Kohn, Phys. Rev. {\bf 123}, 1242 (1961)], which does not apply in graphene as a consequence of the underlying linear band structure.

4 pages, 4 figures. Version 2, edited for publication. Includes a number of edits for clarity; also added a paragraph contrasting our work w/ previous CR expts. in 2D Si and GaAs

References in corpus (17)

• Two Dimensional Atomic Crystals
• Charged Impurity Scattering in Graphene
• Unconventional Integer Quantum Hall effect in graphene
• Landau Level Splitting in Graphene in High Magnetic Fields
• Approaching the Dirac point in high mobility multi-layer epitaxial graphene
• Landau level spectroscopy of ultrathin graphite layers
• Infrared spectroscopy of Landau levels in graphene
• Scanning Tunneling Spectroscopy of Graphene on Graphite
• The zero-energy state in graphene in a high magnetic field
• Cyclotron Resonance study of the electron and hole velocity in graphene monolayers
• Anomalous Absorption Line in the Magneto-Optical Response of Graphene
• Cyclotron resonance in bilayer graphene
• Gap opening in the zeroth Landau level of graphene
• Excitations from Filled Landau Levels in Graphene
• Spontaneous Symmetry Breaking and Quantum Hall Effect in Graphene
• Magnetoplasmons excitations in graphene for filling factors $\nu \le 6$
• Non-linear effects in the cyclotron resonance of a massless quasi-particle in graphene

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