Zhou J1, Liang QF2, Weng H3, Chen YB4, Yao SH1, Chen YF1,5, Dong J4, Guo GY6,7.
Phys Rev Lett. 2016 Jun 24;116(25):256601. doi: 10.1103/PhysRevLett.116.256601. Epub 2016 Jun 20.The quantum anomalous Hall (QAH) phase is a two-dimensional bulk ferromagnetic insulator with a nonzero Chern number in the presence of spin-orbit coupling (SOC) but in the absence of applied magnetic fields. Associated metallic chiral edge states host dissipationless current transport in electronic devices. This intriguing QAH phase has recently been observed in magnetic impurity-doped topological insulators, albeit, at extremely low temperatures. Read More