1303.4987 (I. P. Rusinov et al.)

Many-body effects on the Rashba-type spin splitting in bulk bismuth
tellurohalides    [PDF]

I. P. Rusinov, I. A. Nechaev, S. V. Eremeev, C. Friedrich, S. Blügel, E. V. Chulkov

We report on many-body corrections to one-electron energy spectra of bulk bismuth tellurohalides---materials that exhibit a giant Rashba-type spin splitting of the band-gap edge states. We show that the corrections obtained in the one-shot $GW$ approximation noticeably modify the spin-orbit-induced spin splitting evaluated within density functional theory. We demonstrate that taking into account many-body effects is crucial to interpret the available experimental data.

View original: http://arxiv.org/abs/1303.4987