Nanospintronic properties of carbon-cobalt atomic chains

Periodic atom chains of carbon-cobalt compounds, (CnCo)$_\infty$, comprise both conducting and insulating electronic properties simultaneously depending on the spin type of electrons, and hence are half-metals. Their band gap and the net magnetic moment oscillate with the number of carbon atoms in a...

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Bibliographic Details
Published in:Europhysics letters 2006-02, Vol.73 (4), p.642-648
Main Authors: Durgun, E, Senger, R. T, Mehrez, H, Dag, S, Ciraci, S
Format: Article
Language:English
Subjects:
75.47.Jn
75.75.+a
85.75.-d
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Summary:Periodic atom chains of carbon-cobalt compounds, (CnCo)$_\infty$, comprise both conducting and insulating electronic properties simultaneously depending on the spin type of electrons, and hence are half-metals. Their band gap and the net magnetic moment oscillate with the number of carbon atoms in a unit cell. Finite segments of these chains also show interesting magnetic and transport properties. When connected to appropriate metallic electrodes the antiferromagnetic CoCnCo segments behave like molecular spin-valves, which can be conveniently manipulated.
ISSN:0295-5075
1286-4854
DOI:10.1209/epl/i2005-10432-4