Équipe de Recherche en Physique de l'Information Quantique


author = {Roche, P.-E., Kociak, M., Guéron, S., Kasumov, A., Reulet, B., Bouchiat, H.},
title = {Very low shot noise in carbon nanotubes},
journal = {European Physical Journal B},
year = {2002},
volume = {28},
number = {2},
pages = {217-222},
note = {cited By (since 1996) 36},
url = {http://www.scopus.com/inward/record.url?eid = 2-s2.0-0038238160&partnerID = 40&md5 = 862b43f65e08b8aa29da1a2bc7295f67},
affiliation = {Lab. de Physique des Solides, Bâtiment 510, Université Paris-Sud, 91405 Orsay Cedex, France; Lab. de Phys. de la Matiere Cond., Ecl. Normale Supérieure, 24 rue Lhomond, 75231 Paris Cedex 05, France; Inst. Microlectron. Technol. High P., Russian Academy of Sciences, Chernogolovka 142432, Russian Federation},
abstract = {We have performed noise measurements on suspended ropes of single wall carbon nanotubes (SWNT) between 1 and 300 K for different values of dc current through the ropes. We find that the shot noise is suppressed by more than a factor 100 compared to the full shot noise 2eI. We have also measured an individual SWNT and found a level of noise which is smaller than the minimum expected. Another finding is the very low level of 1/f noise, which is significantly lower than previous observations. We propose two possible interpretations for the strong shot noise reduction: i) Transport within a rope takes place through few nearly ballistic tubes within a rope and possibly involves non integer effective charges with e* ∼ 0.3e. ii) A substantial fraction of the tubes conduct with a strong reduction of effective charge (by more than a factor 50).},
author_keywords = {72.70.+m Noise processes and phenomena; 73. Electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures},
document_type = {Article},
source = {Scopus}}