Superconductor-ferromagnet tunneling measurements indicate sp-spin and d-spin currents

M. Münzenberg; J. S. Moodera

doi:10.1103/PhysRevB.70.060402

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Superconductor-ferromagnet tunneling measurements indicate sp-spin and d-spin currents

M. Münzenberg, J. S. Moodera

DOI 10.1103/PhysRevB.70.060402 · Physical Review B

T1

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Abstract

Spin polarization of tunneling electrons was observed to decrease as the barrier thickness decreased. The polarization measured by the Meservey-Tedrow technique has been separated into a positively and a negatively spin polarized current arising from sp- and d-like interfacial states. The model for separating sp- and d-like spin currents is expressed with an interface transmission probability, a decay rate within the barrier and polarization for each of the channels. The present observation can also have an impact on the downscaling of TMR elements.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown