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arXiv · 0908.0127

Spin-dependent transport in nanocomposite C:Co films

Shengqiang Zhou·Markus Berndt·Danilo Buerger·Viton Heera·Kay Potzger·Gintautas Abrasonis·Gyoergy Radnoczi·Gyoergy J. Kovacs·Andreas Kolitsch·Manfred Helm·Juergen Fassbender·Wolfhard Moeller·Heidemarie Schmidt
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Abstract

The magneto-transport properties of nanocomposite C:Co (15 and 40 at.% Co) thin films are investigated. The films were grown by ion beam co-sputtering on thermally oxidized silicon substrates in the temperature range from 200 to 500 degC. Two major effects are reported: (i) a large anomalous Hall effect amounting to 2 μohm cm, and (ii) a negative magnetoresistance. Both the field-dependent resistivity and Hall resistivity curves coincide with the rescaled magnetization curves, a finding that is consistent with spin-dependent transport. These findings suggest that C:Co nanocomposites are promising candidates for carbon-based Hall sensors and spintronic devices.

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Shengqiang Zhou, Markus Berndt, Danilo Buerger, Viton Heera, Kay Potzger, Gintautas Abrasonis, Gyoergy Radnoczi, Gyoergy J. Kovacs, Andreas Kolitsch, Manfred Helm, Juergen Fassbender, Wolfhard Moeller, Heidemarie Schmidt. 2009-08-02. Spin-dependent transport in nanocomposite C:Co films. https://doi.org/10.1016/j.actamat.2009.06.035

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