We used a time-resolved charge readout technique to study the spin-related transition and spin relaxation for a quantum dot near the regime of filling factor ν=2. The measured tunneling time was seven times faster for a spin triplet than for a spin singlet. We used this difference to identify the singlet-triplet transition under a magnetic field and derive spin relaxation time from the triplet to singlet. We also solved a rate equation to reproduce the experimental data with spin relaxation time as a parameter.
|ジャーナル||Physica E: Low-Dimensional Systems and Nanostructures|
|出版物ステータス||Published - 01-03-2008|
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics