Thermodynamic uncertainty relation in atomic-scale quantum conductors
Hava Meira Friedman, Bijay Kumar Agarwalla, Ofir Shein-Lumbroso, Oren Tal, Dvira Segal
Abstract
Recent advances in stochastic thermodynamics unraveled a thermodynamic uncertainty relation (TUR), which is a trade-off relation between cost (dissipation) and precision (fluctuations). In this study, the authors test its validity in nanoscale systems. Measurements of the electron current and its noise in gold atomic-scale junctions demonstrate that the TUR holds in this quantum coherent system. Based on calculations, the authors go on to argue that the TUR can identify transport mechanisms and pinpoint deviations from noninteracting-electron coherent dynamics.
Topics & Concepts
Statistical physicsQuantumRelation (database)DissipationScale (ratio)PhysicsAtomic unitsElectronNanoscopic scaleQuantum fluctuationQuantum mechanicsComputer scienceDatabaseAdvanced Thermodynamics and Statistical MechanicsQuantum and electron transport phenomenaMolecular Junctions and Nanostructures