Department of Physics, University of California at San Diego, La Jolla, California 92093-0319, USA.
Nano Lett. 2009 Dec;9(12):4204-8. doi: 10.1021/nl9024227.
We report on observation of the spin transport of spatially indirect excitons in GaAs/AlGaAs coupled quantum wells (CQW). Exciton spin transport over substantial distances, up to several micrometers in the present work, is achieved due to orders of magnitude enhancement of the exciton spin relaxation time in CQW with respect to conventional quantum wells.
我们报告了在 GaAs/AlGaAs 耦合量子阱（CQW）中观察到的空间间接激子的自旋输运。由于 CQW 中激子自旋弛豫时间相对于传统量子阱大大增强，实现了长达数微米的激子自旋输运。
