Équipe de Recherche en Physique de l'Information Quantique


author = {Noat, Y., Bouchiat, H., Reulet, B., Mailly, D.},
title = {Sign reversals of AC magnetoconductance in isolated quantum dots},
journal = {Physical Review Letters},
year = {1998},
volume = {80},
number = {22},
pages = {4955-4958},
note = {cited By (since 1996) 5},
url = {http://www.scopus.com/inward/record.url?eid = 2-s2.0-0032097326&partnerID = 40&md5 = 897cfb75b8ffd1d9ed427e7876e5aa93},
affiliation = {Laboratoire de Physique des Solides, Associé au CNRS, Université Paris-Sud, 91405 Orsay, France; CNRS Lab. Microstructures M., 196 Avenue Ravera, 92220 Bagneux, France},
abstract = {We have measured the electromagnetic response of micron-size isolated GaAs/GaAlAs square dots down to 16 mK by coupling them to a microresonator. Both dissipative and reactive responses exhibit a large magnetic field dependent quantum correction, with a characteristic flux scale corresponding to a flux quantum in a dot. The dissipative magnetoconductance changes sign as a function of frequency for a low density of electrons. The signal observed at a frequency below the mean level spacing corresponds to a negative magnetoconductance, in contrast to weak localization in connected systems, and becomes positive at higher frequencies. We interpret this phenomenon in relation to the energy spectrum statistics in the dots.},
document_type = {Article},
source = {Scopus}}