Magnetic response of non-interacting and interacting electrons in a Möbius strip

Article Type

Research Article

Publication Title

Superlattices and Microstructures

Abstract

We investigate characteristic features of both non-interacting and interacting electrons in a Möbius strip, the simplest possible one-sided topological system, in presence of an Aharonov-Bohm flux ϕ. Using Hartree-Fock mean field theory we determine energy eigenvalues for the interacting model, while for the non-interacting system an analytical prescription is given. The interplay between longitudinal and vertical motions of electrons along with on-site Hubbard interaction yield several anomalous features of persistent current associated with energy-flux characteristics. The variation of current with system size and its temperature dependences are also critically examined. Current is highly sensitive to both these two factors, and we find that for a particular system size it decreases exponentially with temperature. Our analysis can be helpful in investigating electronic transport through any non-trivial topological material.

First Page

1081

Last Page

1093

DOI

10.1016/j.spmi.2016.10.080

Publication Date

12-1-2016

Comments

Open Access; Green Open Access

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