Electrically Tunable g Factors in Quantum Dot Molecular Spin States
Abstract
We present a magnetophotoluminescence study of individual vertically stacked InAs/GaAs quantum dot pairs separated by thin tunnel barriers. As an applied electric field tunes the relative energies of the two dots, we observe a strong resonant increase or decrease in the g factors of different spin states that have molecular wave functions distributed over both quantum dots. We propose a phenomenological model for the change in g factor based on resonant changes in the amplitude of the wave function in the barrier due to the formation of bonding and antibonding orbitals.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 10, 2006
- Accession Number
- ADA593667
Entities
People
- Allan S. Bracker
- D. Gammon
- E. A. Stinaff
- I. V. Ponomarev
- M. F. Doty
- M. Scheibner
- Thomas L. Reinecke
- V. L. Korenev
Organizations
- United States Naval Research Laboratory