Unconventional transformation of spin Dirac phase across a topological quantum phase transition

by Xu S.-Y., Neupane M., Belopolski I., Liu C., Alidoust N., Bian G., Jia S., Landolt G., Slomski B., Dil J.H., Shibayev P.P., Basak S., Chang T.-R., Jeng H.-T., Cava R.J., Lin H., Bansil A., Hasan M.Z.
Published 2016