Quantitative measurements of the thermal resistance of Andreev interferometers

Abstract

Using a local thermometry technique, we have been able to quantitatively measure the thermal resistance $R^T$ of diffusive Andreev interferometers. We find that $R^T$ is strongly enhanced from its normal state value at low temperatures, and behaves non-linearly as a function of the thermal current through the sample. We also find that the $R^T$ oscillates as a function of magnetic flux with a fundamental period corresponding to one flux quantum ${\Phi }_0=h/2e$, demonstrating the phase coherent nature of thermal transport in these devices. The magnitude of $R^T$ is larger than predicted by recent numerical simulations.

5 pages, 4 figures

References in corpus (1)

• Thermopower induced by a supercurrent in superconductor-normal-metal structures

Cited by in corpus (16)

• Onsager Relations in Coupled Electric, Thermoelectric and Spin Transport: The Ten-Fold Way
• Bipolar Thermoelectric Josephson Engine
• Nonlocal thermoelectricity in a topological Andreev interferometer
• Thermopower oscillations in mesoscopic Andreev interferometers
• Thermal superconducting quantum interference proximity transistor
• Nonlocal thermoelectric engines in hybrid topological Josephson junctions
• Bipolar Thermoelectricity in Bilayer-Graphene--Superconductor Tunnel Junctions
• Thermoelectric processes of quantum normal-superconductor interfaces
• Peltier effects in Andreev interferometers
• Probing the topological band structure of diffusive multiterminal Josephson junction devices with conductance measurements
• Charge imbalance and Josephson effects in superconductor-normal metal mesoscopic structures
• Influence of Supercurrents on Low-Temperature Thermopower in Mesoscopic N/S Structures
• Thermopower Oscillation Symmetries in a Double-Loop Andreev Interferrometer
• Spontaneous symmetry breaking-induced thermospin effect in superconducting tunnel junctions
• Photonic heat transport from weak to strong coupling
• Optimized proximity thermometer for ultrasensitive detection: Role of an ohmic electromagnetic environment