Probing level renormalization by sequential transport through double quantum dots

TL;DR

This paper investigates how energy level renormalization in double quantum dots influences electron transport, proposing an experimental setup to observe these effects through current-voltage and stability diagram measurements.

Contribution

It introduces a method to detect energy renormalization effects in double quantum dots via transport measurements, highlighting the impact even in weak coupling regimes.

Findings

Energy renormalization shifts affect transport characteristics.

Proposed experimental setup can reveal renormalization effects.

Transport measurements can detect subtle energy shifts.

Abstract

We study electron transport through double quantum dots in series. The tunnel coupling of the discrete dot levels to external leads causes a shift of their energy. This energy renormalization affects the transport characteristics even in the limit of weak dot-lead coupling, when sequential transport dominates. We propose an experimental setup which reveals the renormalization effects in either the current-voltage characteristics or in the stability diagram.