Probing the potential landscape inside a two-dimensional electron-gas
介观与纳米尺度物理
2009-10-31 v1
摘要
We report direct observations of the scattering potentials in a two-dimensional electron-gas using electron-beam diffaction-experiments. The diffracting objects are local density-fluctuations caused by the spatial and charge-state distribution of the donors in the GaAs-(Al,Ga)As heterostructures. The scatterers can be manipulated externally by sample illumination, or by cooling the sample down under depleted conditions.
引用
@article{arxiv.cond-mat/9904301,
title = {Probing the potential landscape inside a two-dimensional electron-gas},
author = {J. J. Koonen and H. Buhmann and L. W. Molenkamp},
journal= {arXiv preprint arXiv:cond-mat/9904301},
year = {2009}
}
备注
4 pages, 4 figures