Anisotropy of hot electron effective mass in n-doped InGaAs revealed by nonlinear THz-pump/THz-probe spectroscopy

摘要

We study ultrafast hot electron transport in n-doped InGaAs using polarization-sensitive nonlinear THz-pump/THz-probe spectroscopy. We observe an anisotropic effective mass for hot electrons due to the nonparabolicity of the conduction band.