Photocurrent Properties of Freely Suspended Carbon Nanotubes under Uniaxial Strain

Details Photocurrent Properties of Freely Suspended Carbon Nanotubes under Uniaxial Strain Photocurrent Properties of Freely Suspended Carbon Nanotubes under Uniaxial Strain

2009-05-25

arxiv.org/abs/0905.3952v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

The photocurrent properties of freely suspended single-walled carbon nanotubes (CNTs) are investigated as a function of uniaxial strain. We observe that at low strain, the photocurrent signal of the CNTs increases for increasing strain, while for large strain, the signal decreases, respectively. We interpret the non-monotonous behavior by a superposition of the influence of the uniaxial strain on the resistivity of the CNTs and the effects caused by Schottky contacts between the CNTs and the metal contacts.

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