6533b7d6fe1ef96bd1265a1e

RESEARCH PRODUCT

Spin relaxation in Cu and Al spin conduits

P. LaczkowskiLaurent VilaNils MotzkoJean-philippe AttanéRobert M. ReeveNils RichterMathias KläuiBjörn Burkhardt

subject

Spin polarizationCondensed matter physicsChemistrySpin valveSurfaces and InterfacesZero field splittingCondensed Matter PhysicsSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsSpin iceSpin waveMaterials ChemistryCondensed Matter::Strongly Correlated ElectronsSpin-flipElectrical and Electronic EngineeringQuantum spin liquidSpin-½

description

We study the spin relaxation in Al and Cu spin conduits embedded in non-local spin valve nanostructures. Measuring the key spin transport properties, we determine the spin and charge diffusion constants as well as the spin flip time. By varying the temperature, we find that the maximum of the non-local spin resistance change occurs at finite temperatures with a clear difference between Al and Cu. In particular, we find that the maximum of the non-local spin signal in Al is less pronounced and occurs at lower temperatures compared to Cu suggesting that the self-passivating Al surface plays a role. Having fabricated devices with both materials in identical processes, we can attribute the differences unambiguously to the differences in the spin current conduit materials properties rather than the fabrication process. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

yearjournalcountryeditionlanguage
2014-02-12physica status solidi (a)
https://doi.org/10.1002/pssa.201300695