Resonant tunneling through coupled self-assembled quantum dots and the influence of inhomogeneous broadening

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceeding

Abstract

Resonant tunneling through a single layer of self-assembled quantum dots (QDs) as well as tunneling through two layers of vertically aligned (stacked) dots is investigated. The difference between single and double layers of QDs can be viewed as going from a two-dimensional emitter to a zero-dimensional emitter. By fabricating small-area devices we are able to probe single stacks of quantum dots, revealing details of the coupling between the stacked dots. Very sharp resonances, with peak-to-valley ratios of several hundred, have been measured in the current-voltage characteristics. We also show that the statistical size distribution of self-assembled quantum dots causing the inhomogeneous broadening in luminescence experiments can be analysed in a resonant tunneling experiment

Detaljer

Författare
Enheter & grupper
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Den kondenserade materiens fysik
  • Elektroteknik och elektronik

Nyckelord

Originalspråkengelska
Titel på värdpublikation7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science
FörlagLund University
Antal sidor2
StatusPublished - 2002
PublikationskategoriForskning
Peer review utfördJa
EvenemangProceedings of 7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science (NANO-7/ECOSS-21) - Malmö, Sverige
Varaktighet: 2002 jun 242002 jun 28

Konferens

KonferensProceedings of 7th International Conference on Nanometer-Scale Science and Technology and 21st European Conference on Surface Science (NANO-7/ECOSS-21)
LandSverige
OrtMalmö
Period2002/06/242002/06/28