Strongly anisotropic ballistic magnetoresistance in compact three-dimensional semiconducting nanoarchitectures

Abstract

We establish theoretically that in nonmagnetic semiconducting bilayer or multilayer thin film systems rolled up into compact quasi-one-dimensional nanoarchitectures, the ballistic magnetoresistance is very anisotropic: conductances depend strongly on the direction of an externally applied magnetic field. This phenomenon originates from the curved open geometry of rolled-up nanotubes, which leads to a tunability of the number of quasi-one-dimensional magnetic subbands crossing the Fermi energy. The experimental significance of this phenomenon is illustrated by a sizable anisotropy that scales with the inverse of the winding number, and persists up to a critical temperature that can be strongly enhanced by increasing the strength of the external magnetic field or the characteristic radius of curvature, and can reach room temperature.

5 pages, 4 figures, one supplemental material

References in corpus (3)

• Quantum mechanics on curved 2D systems with electric and magnetic fields
• Magnetic states in prismatic core multishell nanowires
• Cylindrical Two-Dimensional Electron Gas in a Transverse Magnetic Field

Cited by in corpus (3)

• Electronic materials with nanoscale curved geometries
• Ballistic Anisotropic Magnetoresistance in Core Shell Nanowires and Rolled-up Nanotubes
• Angle-dependent Weiss oscillations in a nanocorrugated two-dimensional electron gas