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The coherent Hall effect: Evolution of the Hall current of charge-carrier wavepackets in a semiconductor superlattice

Kohärenter Hall-Effekt: Evolution des Hall-Stroms eines Ladungsträger-Wellenpaktets in einem Halbleiter-Übergitter
: Bauer, T.; Kolb, J.S.; Hummel, A.B.; Roskos, H.G.; Kosevich, Y.; Köhler, K.

Long, A.R.:
Physics of semiconductors 2002 : Proceedings of the 26th International Conference on the Physics of Semiconductors held in Edinburgh, UK, 29 July - 2 August 2002
Bristol: IOP Publishing, 2003 (Institute of Physics - Conference Series 171)
ISBN: 0-7503-0924-5
International Conference on the Physics of Semiconductors (ICPS) <26, 2002, Edinburgh>
Conference Paper
Fraunhofer IAF ()
III-V semiconductor; III-V Halbleiter; superlattice; Übergitter; terahertz spectroscopy; Terahertz Spektroskopie

The Coherent Hall Effect denotes the transient current/voltage Hall response of impulsively excited coherent charge-carrier wavepackets in a solid. We studied this effect by THz-emission spectroscopy on a semiconductor superlattice in crossed electric and magnetic fields. Depending on the relative magnetic field strength, two regimes of coherent oscillatory charge-carrier motion are found, strictly separated from each other by a transition region where all oscillations are suppressed.