Observation of spin-bottleneck due to spin-charge separation in a superconductor

Details Observation of spin-bottleneck due to spin-charge separation in a superconductor Observation of spin-bottleneck due to spin-charge separation in a superconductor

2004-11-19

arxiv.org/abs/cond-mat/0411500v2

Physics

Condensed Matter

Superconductivity

minor replacements

Scientific paper

10.1103/PhysRevB.72.180505

An experimental device was designed to measure the effect of the injection of spin-polarized carriers on the superconductive gap and density-of-states (DOS). Quasiparticles were injected from a ferromagnet ($Ni_{0.8}Fe_{0.2}$) through a tunnel junction into a conventional superconductor (Nb), while charge neutrality was maintained by a supercurrent. The DOS of the superconductor was measured through a second tunnel junction with a normal paramagnetic metal. No significant decrease of the superconductive gap was observed while a noticeable heating of the quasiparticles of the superconductor was measured. A similar experiment performed with current injected from a paramagnet (Al or Ag) showed no heating of quasiparticles. These observations are consistent with spin-charge separation of Bogoliubov quasi-particles and spin-bottleneck due to the enhanced recombination time of pure spin-excitations.

Affiliated with

Also associated with

No associations

Rating

Observation of spin-bottleneck due to spin-charge separation in a superconductor 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 Observation of spin-bottleneck due to spin-charge separation in a superconductor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Observation of spin-bottleneck due to spin-charge separation in a superconductor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-85095