Site selective 5f electronic correlations in β-uranium

We investigate the electronic structure of β -uranium, which has five nonequivalent atomic sites in its unit cell, by means of the density functional theory plus Hubbard- U correction with U from linear response calculation. It is found that the 5f electronic correlations in β -uranium are moderate. More interestingly, their strengths are site selective, depending on the local atomic environment of the present uranium atom. As a consequence, the occupation matrices and partial 5f density of states of β -uranium manifest site dependence. In addition, the complicate experimental structure of β -uranium could be well reproduced within this theoretical framework.