49 citations · 119 across the 4 of their papers we have counts for
4 papers
Manifestation of the Hofstadter butterfly in far-infrared absorption
Vidar Gudmundsson, Rolf R. Gerhardts
The far-infrared absorption of a two-dimensional electron gas with a square-lattice modulation in a perpendicular constant magnetic field is calculated self-consistently within the…
Hofstadter-type energy spectra in lateral superlattices defined by periodic magnetic and electrostatic fields
Rolf R. Gerhardts, Daniela Pfannkuche, Vidar Gudmundsson
We calculate the energy spectrum of an electron moving in a two-dimensional lattice which is defined by an electric potential and an applied perpendicular magnetic field modulated…
Effects of screening on the Hofstadter butterfly
Vidar Gudmundsson, Rolf R. Gerhardts
We study, within the Hartree approximation, the effects of the electron-electron interaction on the energy spectrum of a two-dimensional electron gas in a perpendicular homogeneous…
Spin effects in a confined 2DEG: Enhancement of the g-factor, spin-inversion states and their far-infrared absorption
Vidar Gudmundsson, Juan Jose Palacios
We investigate several spin-related phenomena in a confined two-dimensional electron gas (2DEG) using the Hartree-Fock approximation for the mutual Coulomb interaction of the elect…