Transport properties of nanosystems with conventional and unconventional charge density waves

Details Transport properties of nanosystems with conventional and unconventional charge density waves Transport properties of nanosystems with conventional and unconventional charge density waves

2006-05-05

arxiv.org/abs/cond-mat/0605142v1

Phys. Rev. B73, 205103 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 7 figures, revtex

Scientific paper

10.1103/PhysRevB.73.205103

We report a systematic study of transport properties of nanosytems with charge density waves. We demonstrate, how the presence of density waves modifies the current-voltage characteristics. On the other hand hand, we show that the density waves themselves are strongly affected by the applied voltage. This self-consistent problem is solved within the formalism of the nonequilibrium Green functions. The conventional charge density waves occur only for specific, periodically distributed ranges of the voltage. Apart from the low voltage regime, they are incommensurate and the corresponding wave vectors decrease discontinuously when the voltage increases.

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