Magnetic Field-Induced Delocalized to Localized Transformation in GaAs:N

Using optical spectroscopy and the MagLab’s unique 60 tesla long-pulse magnet in Los Alamos, scientists have shown how nitrogen dopant atoms in gallium arsenide (GaAs) can form extended “supercluster” states or can break up into localized nitrogen clusters. Nitrogen-doped GaAs (GaAs_1-xN_x) is a semiconductor alloy with potential applications for a wide range of energy-related applications such as photovoltaics.