Quantum States of Matter in Low Dimensions
Quantum States of Matter in Low Dimensions
Prof. Liu has over the years worked on superconductivity and related phenomena in various low-dimensional electronic systems including doubly connected, quasi-one-dimensional cylinders, the quantum nanowires, the e-beam lithography prepared ultrasmall superconducting loops, interface systems, and mechanically exfoliated two-dimensional crystals of transition metal chalcogenides such as NbSe2, TaSe2, and MoS2, with the first observation of superconductivity in atomically thin NbSe2 down to one unit cell. Work in this area has revealed the dramatic effect of the geometrical constrains on superconductivity, the interplay between the superconductivity and charge-density wave physics. Prof. Liu has also worked physical phenomena related to superconductivity such as the quantum transport, charge density waves, and strongly correlated physics in a range of electronic materials including few-layer graphene, bulk Dirac materials, and complex transition metal oxides.
Recent publications:
Yueshen Wu, Hui Xing, Chao-Sheng Lian, Hailong Lian, Jiaming He, Wenhui Duan, Jinyu Liu, Zhiqiang Mao, and Ying Liu, “Ion intercalation engineering of electronic properties of two-dimensional crystals of 2H-TaSe2”, Phys. Rev. Mat. 3, 104003 (2019).
Yusen Yang, Hui Xing, Guoxiong Tang, Chao Yao, Xiaoxian Yan, Yunhao Lu, Jin Hu, Zhiqiang Mao and Ying Liu “Anisotropic Berry phase in Dirac nodal-line semimetal ZrSiS: The effect of spin-orbit coupling,” Phys. Rev. B 103, 125160 (2021).