We thank H. Ding, D. L. Feng, P. C. Dai, N. L. Wang, H. H. Wen, C. Fang and Uday Kiranfor for useful dis cussion. The work was supported by the National Basic Research Program of China (973 Project) (Grant No. 2012CB821400), the Strategic Priority Research Program (B) of the Chinese Academy of Sciences (Grant No. XDB04010600), and the National Natural Science Foundation of China (Grant Nos. 11227902 and 11190024). W. Li also gratefully acknowledges the financial Sponsored by Shanghai Yang-Fan Program (Grant No. 14YF1407100).
Electronic and magnetic structures of iron selenide compounds Ce2O2FeSe2 (2212*) and BaFe2Se3 (123*) are studied by the first-principles calculations. We find that while all these compounds are composed of one-d...