title: Effect of axial torsion on sp carbon atomic wires.
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 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.
authors: Dipartimento di Fisica, Università degli Studi di Milano, 20133 Milano, Italy.
authors: Luca
authors: L
authors: Ravagnan
authors: Nicola
authors: N
authors: Manini
authors: Eugenio
authors: E
authors: Cinquanta
authors: Giovanni
authors: G
authors: Onida
authors: Davide
authors: D
authors: Sangalli
authors: Carlo
authors: C
authors: Motta
authors: Michele
authors: M
authors: Devetta
authors: Andrea
authors: A
authors: Bordoni
authors: Paolo
authors: P
authors: Piseri
authors: Paolo
authors: P
authors: Milani
mesh_terms: D002244:Carbon / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D053770:Nanowires / Q000737:chemistry*; D013059:Spectrum Analysis, Raman
chemical_list: D002244:Carbon