Antibonding ground states in InAs quantum-dot molecules

Download
  1. (PDF, 2 MB)
  2. Get@NRC: Antibonding ground states in InAs quantum-dot molecules (Opens in a new window)
DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.102.047401
AuthorSearch for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for: ; Search for:
TypeArticle
Journal titlePhysical Review Letters
Volume102
Issue4
Pages047401-1047401-4
AbstractCoherent tunneling between two InAs quantum dots forms delocalized molecular states. Using magnetophotoluminescence spectroscopy we show that when holes tunnel through a thin barrier, the lowest energy molecular state has bonding orbital character. However, as the thickness of the barrier increases, the molecular ground state changes character from a bonding orbital to an antibonding orbital, confirming recent theoretical predictions. We explain how the spin-orbit interaction causes this counterintuitive reversal by using a four-band k . p model and atomistic calculations that account for strain.
Publication date
LanguageEnglish
AffiliationNRC Institute for Microstructural Sciences; National Research Council Canada
Peer reviewedYes
NPARC number19371539
Export citationExport as RIS
Report a correctionReport a correction
Record identifier0735d633-fc90-4cf7-aedb-f50ae865cd41
Record created2012-02-29
Record modified2016-05-09
Bookmark and share
  • Share this page with Facebook (Opens in a new window)
  • Share this page with Twitter (Opens in a new window)
  • Share this page with Google+ (Opens in a new window)
  • Share this page with Delicious (Opens in a new window)