Competition between electronic cooling and Andreev dissipation in a superconducting micro-cooler
arXiv:0810.3980 · doi:10.1007/s10909-009-9864-4
Abstract
We discuss very low temperature experiments on superconducting micro-coolers made of a double Normal metal - Insulator - Superconductor junction. We investigate with a high resolution the differential conductance of the micro-cooler as well as of additional probe junctions. There is an explicit crossover between the single quasi-particle current and the phase-coherent Andreev current. We establish a thermal model by considering the thermal contribution due to the Andreev current. The related increase of the electron temperature is discussed, including the influence of several parameters like the phase-coherence length or the tunnel junction transparency.
References in corpus (10)
- Opportunities for mesoscopics in thermometry and refrigeration: Physics and applications
- Interference of two electrons entering a superconductor
- Subgap Conductivity of a Superconducting-Normal Tunnel Interface
- Limitations in cooling electrons by normal metal - superconductor tunnel junctions
- Andreev Current-Induced Dissipation in a Hybrid Superconducting Tunnel Junction
- Scaling Theory of Conduction Through a Normal-Superconductor Microbridge
- Electron and phonon Cooling in a Superconductor - Normal Metal - Superconductor Tunnel Junction
- Long-range coherence and mesoscopic transport in N-S metallic structures
- Mesoscopic proximity effect in double barrier Superconductor/Normal Metal junctions
- Inherent thermometry in a hybrid superconducting tunnel junction
Cited by in corpus (4)
- Nonlinear thermoelectricity in point-contacts at pinch-off: a catastrophe aids cooling
- Electron cooling by diffusive normal metal - superconductor tunnel junctions
- Electron cooling in diffusive normal metal - superconductor tunnel junctions with a spin-valve ferromagnetic interlayer
- Andreev Reflections in Micrometer-Scale Normal-Insulator-Superconductor Tunnel Junctions