61 citations · 2k across the 156 of their papers we have counts for
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Is the Hofstadter energy spectrum observable in far-infrared absorption?
Vidar Gudmundsson, Rolf R. Gerhardts
The far-infrared absorption of a periodically modulated two-dimensional electron gas in a perpendicular constant magnetic field is calculated self-consistently within the Hartree a…
The effects of compressible and incompressible states on the FIR-absorption of quantum wires and dots in a magnetic field
Vidar Gudmundsson, Arne Brataas, Christoph Steinebach +3
We investigate the effects of compressible and incompressible states on the FIR-absorption of quantum wires and dots in a homogeneous perpendicular magnetic field. The electron-ele…
The evolution of Bernstein modes in quantum wires with increasing deviation from parabolic confinement
Arne Brataas, Vidar Gudmundsson, A. G. Mal'shukov +1
We investigate the evolution of the interaction of the magnetoplasmon resonance with the harmonics of the cyclotron resonance as the confinement of an electron gas in a quantum wir…
Collective Excitations in Realistic Quantum Wires
Arne Brataas, A. G. Mal'shukov, Vidar Gudmundsson +1
We have used the Hartree-Fock Random Phase Approximation (HF-RPA) to study the interacting electron gas in a quantum wire. The spectra of intersubband spin-flip excitations reveal…
The Hofstadter Energy Spectrum for an Interacting 2DEG
Vidar Gudmundsson, Rolf R. Gerhardts
We study the effects of the Coulomb interactions between electrons on the Hofstadter butterfly, which characterizes the subband structure of the Landau levels of a two-dimensional…