%0 Journal Article
%T Weyl semimetal phase in solid-solution narrow-gap semiconductors
%A Daichi Kurebayashi
%A Kentaro Nomura
%J Physics
%D 2014
%I arXiv
%R 10.7566/JPSJ.83.063709
%X We theoretically investigate ferromagnetic ordering in magnetically doped solid-solution narrow-gap semiconductors with the strong spin-orbit interaction such as Cr-doped Bi$_2$(Se$_x$Te$_{1-x}$)$_3$. We compute the spontaneous magnetization of impurities and itinerant electrons, and estimate the critical temperature as a function of the concentration of magnetic dopants and the strength of the spin-orbit interaction. It is found that the critical temperature is proportional to the concentration of dopants and enhanced with the strong spin-orbit interaction. It is also found that the ferromagnetic transition could make the system turn to the Weyl semimetal which possesses a pair of Weyl points separating in the momentum space.
%U http://arxiv.org/abs/1404.5132v1