Lateral Transport in Oxidic Field-effect-Structures (B04)

该方案的核心问题是，是否有可能在具有强量子受限斯塔克效应的极性(Mg，Zn)O量子井内暂时只局域一种类型的载流子(特别是空穴)，以调节掺杂到量子井中的磁性离子之间的铁磁耦合。为此，将确定被限制在量子阱中的光受激子的寿命opt，并将其与光受激载流子在势垒内横向传输的驰豫时间el进行比较。如果实验表明EL OPT，我们就对单载流子类型的局部化有了明确的提示。

The central question of the proposal is, if it is possible to temporarily localize only a single type of charge carriers (especially holes) within polar (Mg,Zn)O quantum wells with strong quantum-confined Stark effect in order to mediate a ferromagnetic coupling between magnetic ions doped into the quantum well. For that, the lifetime opt of optically stimulated excitons being confined in the quantum well will be determined and compared to the relaxation time el of the lateral transport of optically stimulated carriers within the well. If the experiments show that el opt we have a clear hint for the localization of a single carrier type.