GaAs/AlGaAs量子阱中单个铍受体的光谱研究
Optical spectroscopy of single beryllium acceptors in GaAs/AlGaAs quantum well
摘要：
我们进行了显微光致发光测量的受体束缚激子（A^0X）复合在外加磁场与单一杂质的分辨率。为了描述所获得的光谱，我们开发了一个理论模型，考虑到量子阱（QW）限制，电子空穴和空穴空穴交换相互作用。通过对实验数据的拟合，我们可以研究量子阱中单个受主的精细结构。我们的实验和模型之间的良好协议表明，我们观察到的单受主在一个纯二维环境中的状态是无应变的量子阱平原。
英文摘要：
We carry out microphotoluminescence measurements of an acceptor-bound exciton (A^0X) recombination in the applied magnetic field with a single impurity resolution. In order to describe the obtained spectra we develop a theoretical model taking into account a quantum well (QW) confinement, an electron-hole and hole-hole exchange interaction. By means of fitting the measured data with the model we are able to study the fine structure of individual acceptors inside the QW. The good agreement between our experiments and the model indicates that we observe single acceptors in a pure two-dimensional environment whose states are unstrained in the QW plain.
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