Abstract
In this paper, we give a brief account of pair-tunneling in GaAs quantum dots. We show that while GaAs is a weakly-polar semiconductor, coupling to optical phonons is sufficiently strong to mediate a negative-U pairing state. As a result, two electrons can tunnel coherently from the source lead to the quantum dot as a Cooper pair would across a Josephson junction. PACS numbers:73.20.Dx,71.38.+i,72.20.My,72.10.-d.
Original language | English (US) |
---|---|
Pages (from-to) | 11-16 |
Number of pages | 6 |
Journal | Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals |
Volume | 283 |
DOIs | |
State | Published - 1996 |
ASJC Scopus subject areas
- Condensed Matter Physics