Fig. 3From: Role of Arsenic During Aluminum Droplet Etching of Nanoholes in AlGaAsCritical time t c between minimizing F As and occurrence of a Ga/Al rich (4 ×2) reconstruction as function of sample temperature T. Symbols denote values measured with RHEED and lines an Arrhenius-type fit. A desorption activation energy E As,D =2.49 eV is determined from an Arrhenius analysis of the dataBack to article page