Quantum Stirling engine based on dinuclear metal complexes

TL;DR

This paper proposes a quantum Stirling engine using dinuclear metal complexes, demonstrating how magnetic properties influence its operation and efficiency, with potential applications in quantum technologies.

Contribution

It introduces a novel quantum thermodynamic cycle based on metal complexes and shows how magnetic susceptibility can characterize its performance.

Findings

Engine efficiency derived from experimental susceptibility data

Magnetic coupling and temperature control cycle modes

Potential for quantum technology applications

Abstract

Low-dimensional metal complexes are versatile materials with tunable physical and chemical properties that make these systems promising platforms for caloric applications. In this context, this work proposes a quantum Stirling cycle based on a dinuclear metal complex as a working substance. The results show that the quantum cycle operational modes can be managed when considering the change in the magnetic coupling of the material and the temperature of the reservoirs. Moreover, magnetic susceptibility can be used to characterize the heat exchanges of each cycle step and, therefore, its performance. As a proof of concept, the efficiency of the heat engine is obtained from experimental susceptibility data. These results open doors for studying quantum thermodynamic cycles by using metal complexes; and further the development of emerging quantum technologies based on these advanced materials.