Periodic giant-persistent current in sharp pulses on a ring

TL;DR

This paper introduces a mesoscopic ring device where an electron exhibits periodic, sharp current pulses that are significantly stronger than traditional Aharonov-Bohm oscillations, with potential for tunable high-current pulses.

Contribution

The study presents a novel mesoscopic device demonstrating a periodic giant-persistent current in sharp pulses, distinct from Aharonov-Bohm oscillations, with theoretical and numerical validation.

Findings

Current pulses can be more than 100 times stronger than A-B oscillations.

The electron motion is exactly periodic and tunable.

The device offers a new way to generate high-intensity, sharp current pulses.

Abstract

We show here a mesoscopic device based on a narrow ring containing an electron. In the device, an amount of energy is stored in advance. Similar to the pendulum, an exact periodic motion of the electron is thereby initiated afterward. The motion appears as a series of sharp pulses, and is in nature different from the well known Aharonov-Bohm (A-B) oscillation. In particular, the pulses of current can be tuned to be very strong (say, more than two orders stronger than the usual A-B current). Related theory and numerical results are presented.