Volume 73, Number 4, February 2006
|Page(s)||642 - 648|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||11 January 2006|
Nanospintronic properties of carbon-cobalt atomic chains
Department of Physics, Bilkent University - Bilkent, Ankara 06800, Turkey
2 Center for NanoTechnology, NASA Ames Research Center Moffett Field, CA 94035-1000, USA
Accepted: 21 December 2005
Periodic atom chains of carbon-cobalt compounds, (CnCo), 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.
PACS: 85.75.-d – Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields / 75.75.+a – Magnetic properties of nanostructures / 75.47.Jn – Ballistic magnetoresistance
© EDP Sciences, 2006
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