Observation of spin splitting in single InAs self-assembled quantum dots in AlAs

被引:60
作者
Thornton, ASG [1 ]
Ihn, T [1 ]
Main, PC [1 ]
Eaves, L [1 ]
Henini, M [1 ]
机构
[1] Univ Nottingham, Dept Phys, Nottingham NG7 2RD, England
关键词
D O I
10.1063/1.121832
中图分类号
O59 [应用物理学];
学科分类号
摘要
Using magneto-tunneling spectroscopy, we observe the Zeeman spin splitting of the ground state of a single InAs. quantum dot grown within AlAs. We obtain values for the g factor of different quantum dots between + 0.52+/-0.08 and + 1.6 +/- 0.2, with magnetic field applied in the plant of the dot. This value for the g factor is considerably different from that of bulk InAs (g = - 14.8), and we explain this using a simple three band k.p calculation. Using the spin split states of the dot as a probe, we observe the complete spin polarization of the emitter accumulation layer. (C) 1998 American Institute of Physics.
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页码:354 / 356
页数:3
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