Universal Relations between Thermoelectrics and Noise in Mesoscopic Transport across a Tunnel Junction
Abstract
We develop a unified theory of weakly probed differential observables for currents and noise in transport experiments. Our findings uncover a set of universal transport relations between thermoelectric and noise properties of a system probed through a tunnel contact, with the Wiedemann-Franz law being just one example of such universality between charge and heat currents. We apply this theory to various quantum systems, including multichannel Kondo, quantum Hall and Sachdev-Ye-Kitaev quantum dots, resonant impurity, and two-stage Kondo models and demonstrate that each of the microscopic theories is characterized by a set of universal relations connecting conductance and thermoelectrics with noise. Violations of these relations indicate additional energy scales emerging in a system.
Fields of Study & Subjects
Quantum and electron transport phenomena
Topological Materials and Phenomena
Advanced Physical and Chemical Molecular Interactions
Publication details
- Journal / source
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Volume
- 136
- Issue
- 4
- Pages
- 046301–046301
- Publication date
- 5 January 2026
- Language
- EN