论文标题
光兴奋的孔在粘性电子流体中的扩散
Diffusion of photo-excited holes in viscous electron fluid
论文作者
论文摘要
在高弹性的介观GAAS \通道中研究了光生成的孔的扩散，其中电子表现出流体动力学特性。结果表明，将孔注射到这样的电子系统中会导致形成流体动力的三组分混合物，由电子和照片产生的重孔和轻孔组成。在双极扩散的框架内分析了所获得的结果，该框架揭示了粘性流的特征。两种孔都表现出相似的流体动力特征。以这种方式，确定了扩散长度，歧义性扩散系数和电子孔系统的有效粘度。
The diffusion of photo-generated holes is studied in a high-mobility mesoscopic GaAs\ channel where electrons exhibit hydrodynamic properties. It is shown that the injection of holes into such an electron system leads to the formation of a hydrodynamic three-component mixture consisted of electrons and photo-generated heavy and light holes. The obtained results are analyzed within the framework of ambipolar diffusion, which reveals characteristics of a viscous flow. Both hole types exhibit similar hydrodynamic characteristics. In such a way the diffusion lengths, ambipolar diffusion coefficient and the effective viscosity of the electron-hole system are determined.
