People

Dr. Yipu Xia received his Ph.D. at the University of Hong Kong (HKU) in 2020. From 2020 to 2023, he was a Postdoctoral Fellow at HKU. In December 2023, he began serving as a Research Assistant Professor in the physics department at HKU, as well as a Scientific Officer for the Area of Excellence (AoE) project on 2D materials research.

Dr. Xia’s research covers growth of two-dimensional materials, one-dimensional strongly correlated systems, growth kinetics, and scanning tunneling microscopy/spectroscopy.  

Dr. Xia’s research interests encompass the growth of 2D materials using molecular beam epitaxy, and the investigation of low-dimensional properties through scanning tunneling microscopy. Recently, his research has centered on the wafer-scale growth of 2D transitional metal dichalcogenides, delving into growth mechanisms, and the study of 1D electronic systems, such as Luttinger liquids, charge density waves, and related phenomena.

1. “Wafer-scale single crystalline MoSe₂ and WSe₂ monolayers grown by molecular beam epitaxy at low-temperature - the role of island-substrate interaction and surface steps.”, Yipu Xia, Degong Ding, Ke Xiao, Junqiu Zhang, Shaogang Xu, Daliang He, Xingyu Yue, Qing Rao, Xiong Wang, Sujuan Ding, Guoyun Gao, Hongxia Xue, Yueyang Wang, Mengfei Yuan, Wingkin Ho, Dong-Keun Ki, Hu Xu, Xiaodong Cui, Chuanhong Jin and Maohai Xie, Natural Sciences, 20220059 (2023)

2. “Niobium and rhenium doping in MoSe₂ monolayer during molecular beam epitaxy: Shallow dopants and defect proliferation”, Junqiu Zhang, Yipu Xia, Zhoubin Yu, Xingyu Yue, Yuanjun Jin, Mengfei Yuan, Yue Feng, Bin Li, Bo Wang, Wingkin Ho, Chang Liu, Hu Xu, Chuanhong Jin and Maohai Xie. APL Materials 11 071113 (2023)

    

3. “Charge density modulation and the Luttinger liquid state in MoSe2 mirror twin boundaries”, Yipu Xia, Junqiu Zhang, Yuanjun. Jin, Wingkin Ho, Hu Xu, and Maohai Xie, ACS Nano, 14, 10, 10716–10722 (2022)

4. “Atomistic Insight into the Epitaxial Growth Mechanism of Single-Crystal Two-Dimensional Transition-Metal Dichalcogenides on Au(111) Substrate”, Degong Ding, Shuang Wang, Yipu Xia, Pai Li, Daliang He, Junqiu Zhang, Sunwen Zhao, Guanghui Yu, Yonghui Zheng, Yan Cheng, Maohai Xie, Feng Ding, and Chuanhong Jin, ACS Nano, 16, 10, 17356-17364 (2022)

5. “Quantum Confined Tomonaga-Luttinger Liquid Mo₆Se₆ Nanowires Converted from Epitaxial MoSe₂ Monolayer.”, Yipu Xia, Bo Wang, Junqiu Zhang, Yuanjun Jin, Wingkin Ho, Hu Xu, Chuanhong Jin and Maohai Xie, Nano Letters, 20, 3, 2094–2099 (2020)

6. “Two-dimensional Metal Phosphorus Network”, Hao Tian, Jun-Qiu Zhang, Wingkin Ho, Jin-Peng Xu, Bowen Xia, Yipu Xia, Jing Fan, Hu Xu, Maohai Xie, S. Y. Tong, Matter, 2, 111–11 (2020)

7. “Shallow Acceptor of Phosphorous Doped in MoSe₂ Monolayer.”, Yipu Xia, Junqiu Zhang, Zhoubin Yu, Yuanjun Jin, Hao Tian, Yue Feng, Bin Li, Wingkin Ho, Chang Liu, Hu Xu, Chuanhong Jin, and Maohai Xie, Advanced Electronic Materials, 10. 1002 /aelm. 201900830 (2019)

8. “Hole Doping in Epitaxial MoSe₂ Monolayer by Nitrogen Plasma Treatment.”, Yipu Xia, Bo Wang, Junqiu Zhang, Yue Feng, Bin Li, Xibiao Ren, Hao Tian, Jinpeng Xu, Wingkin Ho, Hu Xu, Chang Liu, Chuanhong Jin and Maohai Xie. 2D Materials, v. 5 n. 4, p. 041005:1-8 (2018)