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Quantum Spin Transport in Carbon Chains

TitleQuantum Spin Transport in Carbon Chains
Publication TypeJournal Article
Year of Publication2010
AuthorsZanolli, Z., Onida G., & Charlier J. - C.
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.

JournalACS Nano
Volume4
Issue9
Pagination5174 - 5180
URLhttp://dx.doi.org/10.1021/nn100712q
Date Published2010/08/25/
Citation Key1235