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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Commensurability oscillations in the Hall resistance of unidirectional lateral superlattices
(Submitted on 27 Mar 2021 (v1), last revised 7 Jun 2021 (this version, v2))
Abstract: We have observed commensurability oscillations (CO) in the Hall resistance $R_{yx}$ of a unidirectional lateral superlattice (ULSL). The CO, having small amplitudes ($\sim$ 1 $\Omega$) and being superposed on a roughly three-orders of magnitude larger background, are obtained by directly detecting the difference in $R_{yx}$ between the ULSL area and the adjacent unmodulated two-dimensional electron gas area, and then extracting the odd part with respect to the magnetic field. The CO thus obtained are compared with a theoretical calculation and turn out to have the amplitude much smaller than the theoretical prediction. The implication of the smaller-than-predicted CO in $R_{yx}$ on the thermoelectric power of ULSL is briefly discussed.
Submission history
From: Akira Endo [view email][v1] Sat, 27 Mar 2021 02:21:08 GMT (448kb)
[v2] Mon, 7 Jun 2021 07:32:20 GMT (448kb)
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