Journal
EUROPHYSICS LETTERS
Volume 73, Issue 4, Pages 642-648Publisher
IOP Publishing Ltd
DOI: 10.1209/epl/i2005-10432-4
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Periodic atom chains of carbon-cobalt compounds, (CnCo)(infinity), 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.
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