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Acoustoelectric effects in carbon nanotubes
1Laboratoire de Physique des Solides, Associe au CNRS, Batiment 510, Universite Paris-Sud, 91405, Orsay, France.
Abstract:
We report observations of acoustoelectric effects in carbon nanotubes. We excite sound in &mgr;m long ropes of single walled carbon nanotubes suspended between two metallic contacts by applying radio-frequency electric field. The sound is detected by measuring either the dc resistance of the tubes in a region of strong temperature dependence (in the vicinity of superconducting or metal-insulator transition), or their critical current. We show that, depending on the excitation power, the vibrations produce either electron heating or phase coherence breaking.
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