Spin-dependent intergranular transport in highly spin-polarized Co 1-x Fex S2 thin films

M. Manno, R. Frakie, B. Bolon, C. Leighton

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Magnetic and magnetotransport measurements on polycrystalline thin film Co1-x Fex S2, a system that exhibits tunable conduction electron spin polarization in bulk, are reported. The films exhibit a low field hysteretic magnetoresistance (MR) due to spin-dependent intergranular tunneling, thus providing a simple probe of the spin polarization. The MR increases rapidly with x, saturating as the magnetization reaches 1.0 μB/Co, demonstrating that high, doping tunable, spin polarization can be readily achieved in thin films synthesized by simple methods. Quantitative estimates yield spin polarizations as high as 90%.

Original languageEnglish (US)
Article number182510
JournalApplied Physics Letters
Volume95
Issue number18
DOIs
StatePublished - Nov 16 2009

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polarization
thin films
electron spin
conduction electrons
magnetic measurement
magnetization
probes
estimates

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Spin-dependent intergranular transport in highly spin-polarized Co 1-x Fex S2 thin films. / Manno, M.; Frakie, R.; Bolon, B.; Leighton, C.

In: Applied Physics Letters, Vol. 95, No. 18, 182510, 16.11.2009.

Research output: Contribution to journalArticle

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