Resonant Tunnelling through InAs Quantum Dots in Tilted Magnetic Fields: Experimental Determination of the g-Factor Anisotropy
✍ Scribed by J.-M. Meyer; I. Hapke-Wurst; U. Zeitler; R.J. Haug; K. Pierz
- Publisher
- John Wiley and Sons
- Year
- 2001
- Tongue
- English
- Weight
- 86 KB
- Volume
- 224
- Category
- Article
- ISSN
- 0370-1972
No coin nor oath required. For personal study only.
✦ Synopsis
We have determined the Lande ´factor g * in self-organized InAs quantum dots using resonant-tunnelling experiments. With the magnetic field applied parallel to the growth direction z we find g * k ¼ 0:74 for the specific dot investigated. When the magnetic field is tilted away by J from the growth axis, g * gradually increases up to a value g * ? ¼ 0:92 when B ? z. Its angular dependence is found to follow the phenomenological behaviour g * ðJÞ ¼ ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ðg * k cos JÞ 2 þ ðg * ? sin JÞ 2 q .