What question did this study set out to answer?

To investigate quantum magnetotransport properties in a high-mobility two-dimensional electron gas subjected to a weakly modulated submicrometer periodic potential.

January 15, 1989EPL (Europhysics Letters)Open Access

Magnetoresistance Oscillations in a Two-Dimensional Electron Gas Induced by a Submicrometer Periodic Potential

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Authors

DWD. WeißUniversity of Regensburg KKK. von KlitzingMax Planck Institute for Solid State Research KPK. PloogInstitute of Physics

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Implication

Experimental study observes novel magnetoresistance oscillations in modulated two-dimensional electron gases, indicating quantum interference governed by submicrometer potentials.

Key Points

To investigate quantum magnetotransport properties in a high-mobility two-dimensional electron gas subjected to a weakly modulated submicrometer periodic potential.
Tested high-mobility AlGaAs-GaAs heterojunctions at cryogenic temperatures (T ≤ 4.2 K).
Modulated the carrier density weakly using holographic illumination with a fringe period smaller than the electron mean free path.
Detected a new quantum magnetoresistance oscillation periodic in 1/B.
Established that the oscillation period is determined by the interference fringe separation a.
Identified that the oscillation corresponds to Shubnikov-de Haas behavior where only electrons within the first reduced Brillouin zone (|k| < π/a) contribute.

Cite This Study

Weiß et al. (1989) studied this question.

synapsesocial.com/papers/6a830b278847014bd698fddd https://doi.org/10.1209/0295-5075/8/2/012

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Implication

Experimental study observes novel magnetoresistance oscillations in modulated two-dimensional electron gases, indicating quantum interference governed by submicrometer potentials.

Magnetoresistance Oscillations in a Two-Dimensional Electron Gas Induced by a Submicrometer Periodic Potential

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Implication

Key Points

Cite This Study

Magnetoresistance Oscillations in a Two-Dimensional Electron Gas Induced by a Submicrometer Periodic Potential

Discussion

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Implication

Key Points

Cite This Study

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