6 papers
Quasi-one-dimensional spin excitations in the iron pnictide NaFeCuAs
Yifan Wang, David W. Tam, Weiyi Wang +8
Spectroscopic measurements in model one-dimensional (1D) correlated systems offer insights for understanding their two-dimensional counterparts, which include the cuprate and iron…
Emergence of Kugel-Khomskii physics in quarter-filled bilayer correlated systems
Guijing Duan, Yunlong Wang, Zhiguang Liao +2
We present a theoretical study of the low-energy physics of a quarter-hole-filled two-orbital bilayer Hubbard model motivated by transition-metal bilayer systems with strong orbita…
Theory of rare-earth Kramers magnets on a Shastry-Sutherland lattice: dimer phases in presence of strong spin-orbit coupling
Changle Liu, Guijing Duan, Rong Yu
Shastry-Sutherland magnet is a typical frustrated spin system hosting rich phases. While the Heisenberg limit has been extensively studied, the role of spin-orbit coupling is not w…
Spin excitations of the Shastry-Sutherland model -- altermagnetism and deconfined quantum criticality
Hongyu Chen, Guijing Duan, Changle Liu +4
Frustrated quantum magnets can host a variety of exotic spin excitations, including fractionalized spin excitations coupled to emergent gauge fields at deconfined quantum critical…
Theory of magnetism for rare-earth magnets on the Shastry-Sutherland lattice with non-Kramers ions
Guijing Duan, Rong Yu, Changle Liu
Motivated by the rapid experimental progress on the rare-earth Shastry-Sutherland lattice magnets, we propose a generic effective spin model that describes interacting non-Kramers…
Nematicity in iron pnictides: phase competition and emergent symmetry
Yiming Wang, Changle Liu, Shan Wu +3
The phase diagram of iron-based superconductors contains a host of electronic orders, which are intimately connected with their superconductivity. Here we analyze the fluctuations…