Electron and nuclear spin interactions in the optical spectra of single GaAs quantum dots
Electron and nuclear spin interactions in the optical spectra of single GaAs quantum dots
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DOI：
10.1103/physrevlett.86.5176
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发表时间：
2001-05-28
影响因子：
8.6
通讯作者：
Merkulov, IA
中科院分区：
文献类型：
--
作者：
Gammon, D;Efros, AL;Merkulov, IA
研究了单个局域激子磁光谱中电子、空穴和核自旋相互作用引起的精细和超精细分裂。我们解释了磁场依赖的能量分裂之间的竞争塞曼，交换和超精细相互作用。一个意想不到的小超精细贡献分裂接近零的应用领域的描述以及由核自旋和核偶极/偶极相互作用所经历的超精细场的波动之间的相互作用。
Fine and hyperfine splittings arising from electron, hole, and nuclear spin interactions in the magnetooptical spectra of individual localized excitons are studied. We explain the magnetic field dependence of the energy splitting through competition between Zeeman, exchange, and hyperfine interactions. An unexpectedly small hyperfine contribution to the splitting close to zero applied field is described well by the interplay between fluctuations of the hyperfine field experienced by the nuclear spin and nuclear dipole/dipole interactions.