Please use this identifier to cite or link to this item: https://doi.org/10.1038/nmat2781
Title: Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors
Authors: Yang, H. 
Yang, S.-H.
Takahashi, S.
Maekawa, S.
Parkin, S.S.P.
Issue Date: Jul-2010
Source: Yang, H., Yang, S.-H., Takahashi, S., Maekawa, S., Parkin, S.S.P. (2010-07). Extremely long quasiparticle spin lifetimes in superconducting aluminium using MgO tunnel spin injectors. Nature Materials 9 (7) : 586-593. ScholarBank@NUS Repository. https://doi.org/10.1038/nmat2781
Abstract: 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 quasiparticles in superconducting aluminium 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 aluminium-™s superconductivity resulting from the accumulation of spin-polarized carriers in the aluminium 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 quasiparticles. 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. © 2010 Macmillan Publishers Limited. All rights reserved.
Source Title: Nature Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/55982
ISSN: 14761122
DOI: 10.1038/nmat2781
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

47
checked on Dec 14, 2017

WEB OF SCIENCETM
Citations

48
checked on Nov 22, 2017

Page view(s)

39
checked on Dec 17, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.