Correlation between magnetism and spin-dependent transport in CoFeB alloys

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We report a correlation between the spin polarization of the tunneling electrons and the magnetic moment of amorphous CoFeB alloys. Such a correlation is surprising since the spin polarization of the tunneling electrons involves s-like electrons close to the Fermi level (EF), while the magnetic moment mainly arises due to all the d electrons below EF. We show that probing the s and d bands individually provides clear and crucial evidence for such a correlation to exist through s-d hybridization, and demonstrate the tunability of the electronic and magnetic properties of CoFeB alloys.
Originele taal-2Engels
Artikelnummer016602
Pagina's (van-tot)016602-1/4
Aantal pagina's4
TijdschriftPhysical Review Letters
Volume102
Nummer van het tijdschrift1
DOI's
StatusGepubliceerd - 2009

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