The oscillatory magnetoresistance of electrons in a square superlattice potential
- 30 October 1989
- journal article
- letter
- Published by IOP Publishing in Journal of Physics: Condensed Matter
- Vol. 1 (43), 8257-8262
- https://doi.org/10.1088/0953-8984/1/43/026
Abstract
The transverse magnetoresistance of a two-dimensional electron gas in an n-type GaAs/(AlGa)As heterostructure subjected to a square superlattice potential is investigated. Magneto-oscillations are observed at low field (B ≤ 0.4 T) with period Δ(1/B) = ea/2kF, where a = 145 nm is the superlattice constant. At higher fields the magneto-resistance is dominated by Shubnikov-de Haas oscillations. A comparison is made with experiments on a one-dimensional superlattice.Keywords
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