✦ LIBER ✦
Triplet to singlet spin relaxation in a GaAs quantum dot in the regime of filling factor between 2 and 4
✍ Scribed by K. Hitachi; J. Sugawa; M. Yamamoto; S. Tarucha
- Publisher
- Elsevier Science
- Year
- 2008
- Tongue
- English
- Weight
- 351 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1386-9477
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✦ Synopsis
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 n ¼ 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.