First-principles study of electron transport through $C_{20}$ cages

Details First-principles study of electron transport through $C_{20}$ cages First-principles study of electron transport through $C_{20}$ cages

2003-11-08

arxiv.org/abs/cond-mat/0311186v1

Phys. Rev. B 69, 121408 (2004)

Physics

Condensed Matter

8 pages and 3 figures

Scientific paper

10.1103/PhysRevB.69.121408

Electron transport properties of C$_{20}$ molecules suspended between gold electrodes are investigated using first-principles calculations. Our study reveals that the conductances are quite sensitive to the number of C$_{20}$ molecules between electrodes: the conductances of C$_{20}$ monomers are near 1 G$_{0}$, while those of dimers are markedly smaller, since incident electrons easily pass the C$_{20}$ molecules and are predominantly scattered at the C$_{20}$-C$_{20}$ junctions. Moreover, we find both channel currents locally circulating the outermost carbon atoms.

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