Anomalous Tien-Gordon scaling in a 1d tunnel junction

TL;DR

This paper studies how finite-range electron interactions and the shape of ac electric fields affect nonlinear transport and sideband scaling in a one-dimensional quantum wire with an impurity.

Contribution

It reveals that the scaling behavior of sideband occupation probabilities depends on the spatial distribution of the voltage drop, highlighting the role of interaction range and electric field shape.

Findings

Scaling behavior varies with the spatial profile of the ac electric field.

Finite-range interactions influence the nonlinear transport properties.

The shape of the voltage drop affects the occupation probabilities of sidebands.

Abstract

We investigate the nonlinear ac transport through a quantum wire with an impurity in the presence of finite range electron-electron interactions. We discuss the influence of the spatial shape of the ac electric field onto transport properties of the system and find that the scaling behavior of the occupation probability of the sidebands depends on the range of the voltage drop.