Angle-dependent Weiss oscillations in a nanocorrugated two-dimensional electron gas

TL;DR

This paper studies how the geometry of a nanocorrugated 2D electron gas affects magnetotransport, revealing angle-dependent Weiss oscillations and anisotropic magnetoresistance due to inhomogeneous magnetic fields.

Contribution

It demonstrates the tunability of Weiss oscillations and magnetoresistance through the orientation of an external magnetic field in a curved 2D electron system.

Findings

Weiss oscillations depend on the magnetic field direction.

Inhomogeneous magnetic fields induce anisotropic magnetoresistance.

Magnetotransport properties are highly tunable by geometry and field orientation.

Abstract

We investigate the diffusive magnetotransport properties of a two-dimensional electron gas residing in a wrinkled nanostructure. The curved geometry of the nanostructure renders an effective inhomogeneous magnetic field which, in turns, yields Weiss oscillations. Since the relative strength of the effective inhomogeneous magnetic field can be tailored by changing the direction of the externally applied magnetic field, these Weiss oscillations exhibit a strong directional dependence. For large external magnetic fields we also find an anisotropic positive magnetoresistance.