@article {Bawdene1500495, author = {Bawden, Lewis and Riley, Jonathan M. and Kim, Choong H. and Sankar, Raman and Monkman, Eric J. and Shai, Daniel E. and Wei, Haofei I. and Lochocki, Edward B. and Wells, Justin W. and Meevasana, Worawat and Kim, Timur K. and Hoesch, Moritz and Ohtsubo, Yoshiyuki and Le F{\`e}vre, Patrick and Fennie, Craig J. and Shen, Kyle M. and Chou, Fangcheng and King, Phil D. C.}, title = {Hierarchical spin-orbital polarization of a giant Rashba system}, volume = {1}, number = {8}, elocation-id = {e1500495}, year = {2015}, doi = {10.1126/sciadv.1500495}, publisher = {American Association for the Advancement of Science}, abstract = {The Rashba effect is one of the most striking manifestations of spin-orbit coupling in solids and provides a cornerstone for the burgeoning field of semiconductor spintronics. It is typically assumed to manifest as a momentum-dependent splitting of a single initially spin-degenerate band into two branches with opposite spin polarization. Combining polarization-dependent and resonant angle-resolved photoemission measurements with density functional theory calculations, we show that the two {\textquotedblleft}spin-split{\textquotedblright} branches of the model giant Rashba system BiTeI additionally develop disparate orbital textures, each of which is coupled to a distinct spin configuration. This necessitates a reinterpretation of spin splitting in Rashba-like systems and opens new possibilities for controlling spin polarization through the orbital sector.}, URL = {https://advances.sciencemag.org/content/1/8/e1500495}, eprint = {https://advances.sciencemag.org/content/1/8/e1500495.full.pdf}, journal = {Science Advances} }