Figure 1

Thermodynamic SNS system. A superconductor/normal metal/superconductor Josephson weak-link is phase-biased at phase \(\phi \) by a superconducting ring pierced by a magnetic flux. The electronic system can be connected via two thermal valves vL and vR to two external reservoirs residing at temperature TL and TR, respectively. LN and LS are respectively the junction and ring lengths.