Single-parameter adiabatic charge pumping in carbon nanotube resonators

TL;DR

This paper demonstrates single-parameter adiabatic charge pumping in suspended carbon nanotubes near mechanical resonance, driven by a radio-frequency antenna, highlighting a unique dynamic mechanism distinct from two-parameter pumping.

Contribution

It introduces a novel mechanism for charge pumping in nanotubes using a single RF parameter and explores the harmonic response relationship.

Findings

Charge pumping achieved near mechanical resonance

Dynamic adjustment of oscillation is key to the mechanism

Second harmonic response relates to first harmonic, suggesting experimental observability

Abstract

Single-parameter adiabatic charge pumping, induced by a nearby radio-frequency antenna, is achieved in suspended carbon nanotubes close to the mechanical resonance. The charge pumping is due to an important dynamic adjustment of the oscillating motion to the antenna signal and it is different from the mechanism active in the two-parameter pumping. Finally, the second harmonic oscillator response shows an interesting relationship with the first harmonic that should be experimentally observed.