Hyperaccurate thermoelectric currents

TL;DR

This paper analytically identifies the thermoelectric current with the least fluctuation, called the hyperaccurate current, in quantum thermoelectric systems modeled by the Landauer-Büttiker formalism, enhancing understanding of precision at the nanoscale.

Contribution

It provides the first analytical determination of the hyperaccurate thermoelectric current in quantum systems using the Landauer-Büttiker approach.

Findings

Identifies the hyperaccurate thermoelectric current analytically.

Shows how to maximize signal-to-noise ratio in quantum thermoelectrics.

Provides insights into fluctuations at the nanoscale.

Abstract

Thermodynamic currents can fluctuate significantly at the nanoscale. But some currents fluctuate less than others. Hyperaccurate currents are those which fluctuate the least, in the sense that they maximize the signal-to-noise ratio (precision). In this letter we analytically determine the hyperaccurate current in the case of a quantum thermoelectric, modeled by the Landauer-B\"uttiker formalism.