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Magnetoresistance Oscillations in a Two-Dimensional Electron Gas Induced by a Submicrometer Periodic Potential
Europhysics Letters (EPL) · 1989 · Vol. 8(2) · pp. 179–184
D. Weiß✉(Max Planck Institute for Solid State Research)K. von Klitzing(Max Planck Institute for Solid State Research)K. Ploog(Max Planck Institute for Solid State Research)G. Weimann(Schott (Germany))
Abstract
A new type of magnetoresistance oscillation periodic in 1/B is observed when the carrier density Ns of a two-dimensional electron gas is weakly modulated with a period smaller than the mean free path of the electrons. Experiments with high mobility AlGaAs-GaAs heterojunctions where Ns is modulated by holographic illumination at T ⩽ 4.2 K show that the period of the additional quantum oscillation is determined by the separation a of the interference fringes. This period corresponds to Shubnikov-de Haas oscillations where only the electrons within the first reduced Brillouin zone with |k| < π/a contribute.
Quantum and electron transport phenomenaSemiconductor Quantum Structures and DevicesPhysics of Superconductivity and MagnetismBrillouin zoneMagnetoresistanceOscillation (cell signaling)ElectronCondensed matter physicsPeriod (music)HeterojunctionFermi gasPhysicsSuperlattice
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Magnetoresistance Oscillations in a Two-Dimensional Electron Gas Induced by a Submicrometer Periodic Potential
Europhysics Letters (EPL) · 1989 · 502 citations
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