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