Is the Hofstadter energy spectrum observable in far-infrared absorption?

Vidar Gudmundsson; Rolf R. Gerhardts

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Is the Hofstadter energy spectrum observable in far-infrared absorption?

Vidar Gudmundsson·Rolf R. Gerhardts

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Abstract

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 approximation. For vanishing modulation the magnetoplasmon dispersion shows simple anticrossings with harmonics of the cyclotron resonance, as expected. For increasing modulation we identify intra- and intersubband magnetoplasmon modes charaterized by the number of flux quanta through each unit cell of the periodic potential.

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Vidar Gudmundsson, Rolf R. Gerhardts. 1996-08-08. Is the Hofstadter energy spectrum observable in far-infrared absorption?. https://arxiv.org/abs/cond-mat/9608045

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