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Effects of axial torsion on sp carbon atomic nanowires

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arxiv 0902.2573 v4 pith:ULO3VMXW submitted 2009-02-15 cond-mat.mtrl-sci

classification cond-mat.mtrl-sci
keywords carbonab-initioallowsapplicationsatomicaxialcalculationschains
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Ab-initio calculations within Density Functional Theory combined with experimental Raman spectra on cluster-beam deposited pure carbon films provide a consistent picture of sp-carbon chains stabilized by sp^3 or sp^2 terminations, the latter being sensitive to torsional strain. This unexplored effect promises many exciting applications since it allows one to modify the conductive states near the Fermi level and to switch on and off the on-chain pi-electron magnetism.

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