1. The Institute of Technological Sciences, Wuhan University 1 , Wuhan 430072, China
2. Hubei Yangtze Memory Laboratories, Wuhan University 2 , Wuhan 430205, China
3. Hubei Key Laboratory of Electronic Manufacturing and Packaging Integration, Wuhan University 3 , Wuhan 430072, China
4. School of Microelectronics, Wuhan University 4 , Wuhan 430072, China