Forskning ved Københavns Universitet - Københavns Universitet

Forside

Photocurrent, Rectification, and Magnetic Field Symmetry of Induced Current Through Quantum Dots

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

Dokumenter

  • pdf

    340 KB, PDF-dokument

We report mesoscopic dc current generation in an open chaotic quantum dot with ac excitation applied to one of the shape-defining gates. For excitation frequencies large compared to the inverse dwell time of electrons in the dot (i.e., GHz), we find mesoscopic fluctuations of induced current that are fully asymmetric in the applied perpendicular magnetic field, as predicted by recent theory. Conductance, measured simultaneously, is found to be symmetric in field. In the adiabatic (i.e., MHz) regime, in contrast, the induced current is always symmetric in field, suggesting its origin is mesoscopic rectification.
OriginalsprogEngelsk
TidsskriftPhysical Review Letters
Vol/bind91
Udgave nummer24
Sider (fra-til)246804
Antal sider4
ISSN0031-9007
DOI
StatusUdgivet - 17 apr. 2003

Antal downloads er baseret på statistik fra Google Scholar og www.ku.dk


Ingen data tilgængelig

ID: 38327483