Chemical potential effects on polytypism in Au-catalyzed GaAs nanowire molecular beam epitaxy growth: A first-principles study

â¿¢An ab-initio-thermodynamic-combined approach was applied to study the polytypism.â¿¢Classical nucleation theory was parameterized by ab initio calculations.â¿¢Chemical potential exhibits important influence on the polytypism of GaAs nanowires.