%A Ke He %T Topological insulator: Both two- and three-dimensional %0 Journal Article %D 2012 %J Front. Phys. %J Frontiers of Physics %@ 2095-0462 %R 10.1007/s11467-012-0248-x %P 148-149 %V 7 %N 2 %U {https://journal.hep.com.cn/fop/EN/10.1007/s11467-012-0248-x %8 2012-04-01 %X