Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2010-11-16
Nature Materials 9, 586-593 (2010)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
Scientific paper
10.1038/NMAT2781
There has been an intense search in recent years for long-lived spin-polarized carriers for spintronic and quantum-computing devices. Here we report that spin polarized quasi-particles in superconducting aluminum layers have surprisingly long spin-lifetimes, nearly a million times longer than in their normal state. The lifetime is determined from the suppression of the aluminum's superconductivity resulting from the accumulation of spin polarized carriers in the aluminum layer using tunnel spin injectors. A Hanle effect, observed in the presence of small in-plane orthogonal fields, is shown to be quantitatively consistent with the presence of long-lived spin polarized quasi-particles. Our experiments show that the superconducting state can be significantly modified by small electric currents, much smaller than the critical current, which is potentially useful for devices involving superconducting qubits.
Maekawa Sadamichi
Parkin Stuart S. P.
Takahashi Saburo
Yang Hyunsoo
Yang See-Hun
No associations
LandOfFree
Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors 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 Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-463800