5 papers
Engineering excitonic metal-insulator transitions in ultra-thin doped copper sulfides
Haiyang Chen, Yufeng Liu, Yashi Jiang +10
Delicate engineering of the bands remains challenging due to complex electronic, structural, and compositional interplay. We demonstrate the formation of distinct metallic and insu…
Imaging moiré flat bands and Wigner molecular crystals in twisted bilayer MoTe2
Yufeng Liu, Yu Gu, Ting Bao +16
Two-dimensional semiconducting moiré materials have emerged as a highly tunable platform for exploring novel quantum phenomena. Recently, tMoTe2 has attracted significant attentio…
Real-space study of zero-field correlation in tetralayer rhombohedral graphene
Yufeng Liu, Zonglin Li, Shudan Jiang +19
Rhombohedral graphene (RG) has emerged as a promising platform for exploring exotic quantum phenomena, such as quantum magnetism, unconventional superconductivity, and fractional q…
Atomic-Scale Imaging of Fractional Spinon Quasiparticles in Open-Shell Triangulene Spin- Chains
Zhangyu Yuan, Xin-Yu Zhang, Yashi Jiang +14
The emergence of spinon quasiparticles, which carry spin but lack charge, is a hallmark of collective quantum phenomena in low-dimensional quantum spin systems. While the existence…
Artificially built Kondo chains with organic radicals on metallic surfaces: new model system of heavy fermion quantum criticality
En Li, Bimla Danu, Yufeng Liu +6
Heavy fermion quantum criticality is an extremely rich domain of research which represents a framework to understand strange metals as a consequence of a Kondo breakdown transition…