A initio investigation of quasi-one-dimensional nano-structures in dilute magnetic semiconductors

摘要

A new control method of quasi-one-dimensional nano-structures in dilute magnetic semiconductors (DMS) is demonstrated by using ab initio calculations and Monte Carlo simulation of spinodal decomposition under layer-by-layer crystal growth condition. We show that growth positions of the quasi-one-dimensional nano-structures in the DMS can be controlled by making a periodic atomic-patterning of magnetic impurities on the semiconductor substrate before the thermal non-equilibrium crystal growth by e.g. molecular-beam epitaxy.