In recent years, he has carried out a series of theoretical and computational studies on the microscopic mechanism of the macroscopic electromagnetic phenomena of transition metal compounds (especially superconductors and magnetic materials), as well as cooperative research with experimentalists. More than 100 scientific research papers have been published, including 81 physical review series papers.
Publication list:
https://orcid.org/0000-0001-6216-333X
Selected publications:
Iron-based superconductors
· Nematic antiferromagnetic states in bulk FeSe, Kai Liu, Zhong-Yi Lu, and Tao Xiang, Phys. Rev. B 93, 205154 (2016). (Experimental background: FeSe crystal has no long-range magnetic order but antiferromagnetic correlation and nematicity at normal pressure.)
· Influence of spin-phonon coupling on antiferromagnetic spin fluctuations in FeSe under pressure: First-principles calculations with van der Waals corrections, Qian-Qian Ye, Kai Liu, and Zhong-Yi Lu, Phys. Rev. B 88, 205130 (2013). (Experimental background: the dome-like evolution of superconducting Tc of FeSe crystal with pressure.)
· First-principles study of the magnetic and electronic properties of K-coated FeSe films, Xiao-Xiao Man, Jian-Feng Zhang, Pei-Han Sun, Huan-Cheng Yang, Zhong-Yi Lu, and Kai Liu, Phys. Rev. B 109, 035105 (2024). (Experimental background: Superconducting Tc of FeSe thin films show the dome-like evolution with K doping on the surface.)
· Spin-charge-lattice couplings and Co doping effect in Ba(Fe1-xCox)2As2: an ab initio molecular dynamics study, Hui-Hui He, Huan-Cheng Yang, Zhong-Yi Lu, and Kai Liu, Supercond. Sci. Technol. 37, 065020 (2024). (Experimental background: Superconducting Tc of BaFe2As2 shows the dome-like evolution with the Co doping.)
Copper oxide superconductors
· Electronic structures of quasi-one-dimensional cuprate superconductors Ba2CuO3+δ, Kai Liu, Zhong-Yi Lu, and Tao Xiang, Phys. Rev. Mater. 3, 044802 (2019).
· Exploring charge and spin fluctuations in infinite-layer cuprate SrCuO2 from a phonon perspective, Xin Du, Pei-Han Sun, Ben-Chao Gong, Jian-Feng Zhang, Zhong-Yi Lu, and Kai Liu, Sci. China-Phys. Mech. Astro. 67, 287411 (2024).
· Tunable surface electron gas and effect of phonons in Sr2CuO3: A first-principles study, Xin Du, Hui-Hui He, Xiao-Xiao Man, Zhong-Yi Lu, and Kai Liu, Phys. Rev. B 110, 195121 (2024).
Topological States and Superconductivity in Transition Metal Diborides
· Experimental observation of Dirac nodal links in centrosymmetric semimetal TiB2, Zhonghao Liu, Rui Lou, Pengjie Guo, Qi Wang, Shanshan Sun, Chenghe Li, Setti Thirupathaiah, Alexander Fedorov, Dawei Shen, Kai Liu, Hechang Lei, and Shancai Wang, Phys. Rev. X 8, 031044 (2018).
· Pressure-induced superconductivity at 32 K in MoB2, Cuiying Pei, Jianfeng Zhang, Qi Wang, Yi Zhao, Lingling Gao, Chunsheng Gong, Shangjie Tian, Ruitao Luo, Mingtao Li, Wenge Yang, Zhong-Yi Lu, Hechang Lei, Kai Liu, and Yanpeng Qi, Natl. Sci. Rev. 10, nwad034 (2023).
CDW states, topological property and superconductivity of Kagome lattice superconductors
· Charge-density-wave-induced bands renormalization and energy gaps in a kagome superconductor RbV3Sb5, Zhonghao Liu, Ningning Zhao, Qiangwei Yin, Chunsheng Gong, Zhijun Tu, Man Li, Wenhua Song, Zhengtai Liu, Dawei Shen, Yaobo Huang, Kai Liu, Hechang Lei, and Shancai Wang, Phys. Rev. X 11, 041010 (2021).
· Quantum transport evidence of topological band structures of kagome superconductor CsV3Sb5, Yang Fu, Ningning Zhao, Zheng Chen, Qiangwei Yin, Zhijun Tu, Chunsheng Gong, Chuanying Xi, Xiangde Zhu, Yuping Sun, Kai Liu, and Hechang Lei, Phys. Rev. Lett. 127, 207002 (2021).
· First-principles study of the double-dome superconductivity in the kagome material CsV3Sb5 under pressure, Jian-Feng Zhang, Kai Liu, and Zhong-Yi Lu, Phys. Rev. B 104, 195130 (2021).
Large magnetoresistive and superconducting states of binary lanthanide compounds
· Charge compensation in extremely large magnetoresistance materials LaSb and LaBi revealed by first-principles calculations, Peng-Jie Guo, Huan-Cheng Yang, Bing-Jing Zhang, Kai Liu, and Zhong-Yi Lu, Phys. Rev. B 93, 235142 (2016).
· First-principles study of electron-phonon coupling and magnetoresistance of LaBi under pressure, Jian-Feng Zhang, Peng-Jie Guo, Kai Liu, and Zhong-Yi Lu, Phys. Rev. B 101, 155139 (2020).