2011

Spin relaxation in InGaN quantum disks in GaN nanowires

Spin relaxation in InGaN quantum disks in GaN nanowires
A. Banerjee, F. Dogan, J. Heo, A. Manchon, W. Guo, and P. Bhattacharya
Nano Letters 11, 5396 (2011)​​​​​​​
A. Banerjee, F. Dogan, J. Heo, A. Manchon, W. Guo, P. Bhattacharya
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2011
The spin relaxation time of photoinduced conduction electrons has been measured in InGaN quantum disks in GaN nanowires as a function of temperature and In composition in the disks. The relaxation times are of the order of ∼100 ps at 300 K and are weakly dependent on temperature. Theoretical considerations show that the Elliott–Yafet scattering mechanism is essentially absent in these materials and the results are interpreted in terms of the D’yakonov–Perel’ relaxation mechanism in the presence of Rashba spin–orbit coupling of the wurtzite structure. The calculated spin relaxation times are in good agreement with the measured values.