Issue 2, 2022

Magnetoconductance modulations due to interlayer tunneling in radial superlattices

Abstract

Radial superlattices are nanostructured materials obtained by rolling up thin solid films into spiral-like tubular structures. The formation of these “high-order” superlattices from two-dimensional crystals or ultrathin films is expected to result in a transition of transport characteristics from two-dimensional to one-dimensional. Here, we show that a transport hallmark of radial superlattices is the appearance of magnetoconductance modulations in the presence of externally applied axial magnetic fields. This phenomenon critically relies on electronic interlayer tunneling processes that activate an unconventional Aharonov–Bohm-like effect. Using a combination of density functional theory calculations and low-energy continuum models, we determine the electronic states of a paradigmatic single-material radial superlattice – a two-winding carbon nanoscroll – and indeed show momentum-dependent oscillations of the magnetic states in the axial configuration, which we demonstrate to be entirely due to hopping between the two windings of the spiral-shaped scroll.

Graphical abstract: Magnetoconductance modulations due to interlayer tunneling in radial superlattices

Associated articles

Supplementary files

Article information

Article type
Communication
Submitted
27 kol 2021
Accepted
08 pro 2021
First published
10 pro 2021

Nanoscale Horiz., 2022,7, 168-173

Magnetoconductance modulations due to interlayer tunneling in radial superlattices

Y. Zhong, A. Huang, H. Liu, X. Huang, H. Jeng, J. You, C. Ortix and C. Chang, Nanoscale Horiz., 2022, 7, 168 DOI: 10.1039/D1NH00449B

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