Limitations in cooling electrons by normal metal - superconductor tunnel junctions

Details Limitations in cooling electrons by normal metal - superconductor tunnel junctions Limitations in cooling electrons by normal metal - superconductor tunnel junctions

2003-12-16

arxiv.org/abs/cond-mat/0312401v3

Phys. Rev. Lett. 92, 056804 (2004)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures, added Ref. [6] + minor corrections

Scientific paper

10.1103/PhysRevLett.92.056804

We demonstrate both theoretically and experimentally two limiting factors in cooling electrons using biased tunnel junctions to extract heat from a normal metal into a superconductor. Firstly, when the injection rate of electrons exceeds the internal relaxation rate in the metal to be cooled, the electrons do no more obey the Fermi-Dirac distribution, and the concept of temperature cannot be applied as such. Secondly, at low bath temperatures, states within the gap induce anomalous heating and yield a theoretical limit of the achievable minimum temperature.

Affiliated with

Also associated with

No associations

Rating

Limitations in cooling electrons by normal metal - superconductor tunnel junctions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Limitations in cooling electrons by normal metal - superconductor tunnel junctions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Limitations in cooling electrons by normal metal - superconductor tunnel junctions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-510955