Strong anti-strain capacity of CoFeB/MgO interface on electronic structure and state coupling

Guo Fei, Wu Yaping^†, Wu Zhiming^‡, Chen Ting, Li Heng, Zhang Chunmiao, Fu Mingming, Lu Yihong, Kang Junyong^¶

(color online) -resolved densities of state (DOS) at the interfacial Fe and Co atoms in the Fe/MgO and CoFe/MgO interfaces near the Fermi energy with symmetry. Majority-spin channels for the interfacial ((a)–(d)) Fe atom in the Fe/MgO interface, ((e)–(h)) Fe atom in the CoFe/MgO interface, and ((i)–(l)) Co atom in the CoFe/MgO interface. Left to right panels correspond to the biaxial strains of 0%, 1.4%, 2.8%, and 3.5%, respectively.