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 sp3 or sp2 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.
Effect of Axial Torsion on sp Carbon Atomic Wires / L. Ravagnan, N. Manini, E. Cinquanta, G. Onida, D. Sangalli, C. Motta, M. Devetta, A. Bordoni, P.G.C. Piseri, P. Milani. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 102:24(2009 Jun 19), pp. 245502.245502-1-245502.245502-4. [10.1103/PhysRevLett.102.245502]
Effect of Axial Torsion on sp Carbon Atomic Wires
L. RavagnanPrimo
;N. ManiniSecondo
;G. Onida;M. Devetta;A. Bordoni;P.G.C. PiseriPenultimo
;P. MilaniUltimo
2009
Abstract
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 sp3 or sp2 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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