Quasiparticle Interference and Landau Level Spectroscopy in Graphene in the presence of a Strong Magnetic Field

Abstract

We present a calculation of the modulation in the Local Density Of electronic States (LDOS) caused by an impurity in graphene in the presence of external magnetic field. We focus on the spatial Fourier Transform (FT) of this modulation around the impurity. The FT due to the low energy quasiparticles are found to be nonzero over the reciprocal lattice corresponding to graphene. At these lattice spots the FT exhibits well-defined features at wavevectors that are multiples of the inverse cyclotron orbit diameter (see Figure 2) and is cut off at the wavevector corresponding to the energy of observation. Scanning Tunneling Spectroscopy (STS) on graphene and the energy-resolved FT fingerprint obtained therefrom may be used to observe the quasiparticle interference of Dirac particles in graphene in the presence of magnetic field.

4 pages, 2 figures

References in corpus (3)

• Electric Field Effect in Atomically Thin Carbon Films
• The electronic properties of graphene
• Symmetry-based approach to electron-phonon interactions in graphene

Cited by in corpus (4)

• Colloquium: Topological Band Theory
• High magnetic field theory for the local density of states in graphene with smooth arbitrary potential landscapes
• Landau Levels as a Limiting Case of a Model with the Morse-Like Magnetic Field
• The local density of states in the presence of impurity scattering in graphene at high magnetic field