刘充

 刘充，2013年于中国科学技术大学物理学院获得学士学位，2018年于清华大学物理系获得博士学位，之后在不列颠哥伦比亚大学（UBC）从事博士后工作，2021年底加入北京量子信息科学研究院低维量子材料团队，任副研究员。

主要研究方向为非常规界面超导、新型二维材料薄膜的制备和新奇量子物态的探索与调控，利用分子束外延（MBE）技术精确生长薄膜材料，利用扫描隧道显微镜（STM）、角分辨光电子谱（ARPES）并结合磁电输运、X射线谱学等手段进行表征。截至2024年，已在Nature Communications、Nano Letters等知名期刊上发表论文33篇，总计被引用约1100次，h指数为15。

科研人才项目

单层FeSe中电荷及自旋有序态的扫描隧道显微学研究，国家自然科学基金青年科学基金项目，30万元。

北京市海外高层次人才青年项目。

代表性论文（*表示通讯作者，#表示共同一作）

1.   K. Zhu, H. Wang, Y. Zhu, Y. Zang, Y. Feng, B. Tong, D. Zhao, X. Xie, K. Chang, K. He, and C. Liu*. Stoichiometric growth of monolayer FeSe superconducting films using a selenium cracking source. Crystals 12, 853 (2022).

2.   C. Liu*, K. Chang, and K. Zou. Realistic simulation of reflection high-energy electron diffraction patterns for two-dimensional lattices using Ewald construction. Journal of Vacuum Science & Technology B 40, 054002 (2022).

3.   C. Liu, R. P. Day, F. Li, R. L. Roemer, S. Zhdanovich, S. Gorovikov, T. M. Pedersen, J. Jiang, S. Lee, M. Schneider, D. Wong, P. Dosanjh, F. J. Walker, C. H. Ahn, G. Levy, A. Damascelli, G. A. Sawatzky, and K. Zou. High-order replica bands in monolayer FeSe/SrTiO₃ revealed by polarization-dependent photoemission spectroscopy. Nature Communications 12, 4573 (2021).

4.   C. Liu^#*, H. Shin^#, A. Doll, H.-H. Kung, R. P. Day, B. A. Davidson, J. Dreiser, G. Levy, A. Damascelli, C. Piamonteze, and K. Zou*. High-temperature superconductivity and its robustness against magnetic polarization in monolayer FeSe on EuTiO₃. npj Quantum Materials 6, 85 (2021).

5.   Y. Liu, S. Qi, J. Fang, J. Sun, C. Liu, Y. Liu, J. Qi, Y. Xing, H. Liu, X. Lin, L. Wang, Q.-K. Xue, X. C. Xie, and J. Wang. Observation of in-plane quantum Griffiths singularity in two-dimensional crystalline superconductors. Physical Review Letters 127, 137001 (2021).

6.   C. Liu and K. Zou. Tuning stoichiometry and its impact on superconductivity of monolayer and multilayer FeSe on SrTiO₃. Physical Review B 101, 140502(R) (2020).

7.   Y. Liu^#, Y. Xu^#, J. Sun^#, C. Liu^#, Y. Liu, C. Wang, Z. Zhang, K. Gu, Y. Tang, C. Ding, H. Liu, H. Yao, X. Lin, L. Wang, Q.-K. Xue, and J. Wang. Type-II Ising superconductivity and anomalous metallic state in macro-size ambient-stable ultrathin crystalline films. Nano Letters 20, 5728 (2020).

8.   H. Shin, C. Liu, F. Li, R. Sutarto, B. A. Davidson, and K. Zou. Controlling the electrical and magnetic ground states by doping in the complete phase diagram of titanate Eu_1-xLa_xTiO₃ thin films. Physical Review B 101, 214105 (2020).

9.   R. Roemer, C. Liu, and K. Zou. Robust ferromagnetism in wafer-scale monolayer and multilayer Fe₃GeTe₂. npj 2D Materials and Applications 4, 33 (2020).

10. C. Liu, F. Zheng, L. Shen, M. Liao, R. Wu, G. Gong, C. Ding, H. Yang, W. Li, C.-L. Song, K. He, X.-C. Ma, D. Zhang, L. Yang, P. Zhang, L. Wang, and Q.-K. Xue. Anti-PbO-type CoSe film: a possible analog to FeSe superconductors. Superconductor Science and Technology 31, 115011 (2018).

11. C. Liu, H. Yang, C.-L. Song, W. Li, K. He, X.-C. Ma, L. Wang, and Q.-K. Xue. Observation of tunneling gap in epitaxial ultrathin films of pyrite-type copper disulfide. Chinese Physics Letters 35, 027303 (2018).

12. C. Liu, J. Mao, H. Ding, R. Wu, C. Tang, F. Li, K. He, W. Li, C.-L. Song, X.-C. Ma, Z. Liu, L. Wang, and Q.-K. Xue. Extensive impurity-scattering study on the pairing symmetry of monolayer FeSe films on SrTiO₃. Physical Review B 97, 024502 (2018).

13. C. Liu, C.-S. Lian, M.-H. Liao, Y. Wang, Y. Zhong, C. Ding, W. Li, C.-L. Song, K. He, X.-C. Ma, W. Duan, D. Zhang, Y. Xu, L. Wang, and Q.-K. Xue. Two-dimensional superconductivity and topological states in PdTe₂ thin films. Physical Review Materials 2, 094001 (2018).

14. L. Shen, C. Liu, F. W. Zheng, X. Xu, Y. J. Chen, S. C. Sun, L. Kang, Z. K. Liu, Q. K. Xue, L. L. Wang, Y. L. Chen, and L. X. Yang. Evolution of electronic structure and electron-phonon coupling in ultrathin tetragonal CoSe films. Physical Review Materials 2, 114005 (2018).

15. G. Zhou^#, D. Zhang^#, C. Liu^#, C. Tang, X. Wang, Z. Li, C. Song, S. Ji, K. He, L. Wang, X. Ma, and Q.-K. Xue. Interface induced high temperature superconductivity in single unit-cell FeSe on SrTiO₃(110). Applied Physics Letters 108, 202603 (2016).

16. Z. F. Wang, H. Zhang, D. Liu, C. Liu, C. Tang, C. Song, Y. Zhong, J. Peng, F. Li, C. Nie, L. Wang, X. J. Zhou, X. Ma, Q. K. Xue, and F. Liu. Topological edge states in a high-temperature superconductor FeSe/SrTiO₃(001) film. Nature Materials 15, 968 (2016).

17. C. Tang^#, C. Liu^#, G. Zhou, F. Li, H. Ding, Z. Li, D. Zhang, Z. Li, C. Song, S. Ji, K. He, L. Wang, X. Ma, and Q.-K. Xue. Interface-enhanced electron-phonon coupling and high-temperature superconductivity in potassium-coated ultrathin FeSe films on SrTiO₃. Physical Review B 93, 020507(R) (2016).