Quantum Spin Transport in Carbon Chains.

Zanolli, Zeila;Onida, Giovanni;Charlier, Jean-Christophe
(2010) ACS Nano — Vol. 4, n° 9, p. 5174-5180 (2010)

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Abstract
First-principles and non-equilibrium Green's function approaches are used to predict spin-polarized electronic transport in monatomic carbon chains covalently connected to graphene nanoribbons, as recently synthetized experimentally (Jin, C.; et al. Phys. Rev. Lett. 2009, 102, 205501-205504). Quantum electron conductances exhibit narrow resonant states resulting from the simultaneous presence of open conductance channels in the contact region and on the chain atoms. Odd-numbered chains, which acquire metallic or semiconducting character depending on the nature of the edge at the graphene contact, always display a net spin polarization. The combination of electrical and magnetic properties of chains and contacts results in nanodevices with intriguing spintronic properties such as the coexistence of magnetic and semiconducting behaviors.
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Zanolli, Z., Onida, G., & Charlier, J.-C. (2010). Quantum Spin Transport in Carbon Chains. ACS Nano, 4(9), 5174-5180. https://doi.org/10.1021/nn100712q (Original work published 2010)