Magnetic Response in Mesoscopic Rings and Moebius Strips: A Theoretical Study

摘要

We investigate magnetic response in mesoscopic rings and moebius stripspenetrated by magnetic flux $\phi$. Based on a simple tight-binding frameworkall the calculations are performed numerically which describe persistentcurrent and low-field magnetic susceptibility as functions of magnetic flux$\phi$, total number of electrons $N_e$, system size $N$ and disorder strength$W$. Our exact analysis may provide some important signatures to study magneticresponse in nano-scale loop geometries.