3 papers
cond-mat.supr-con2026
Electronically Inactive Intercalated LaNiO Layer in Superconducting LaNiO
Tianyang Xie, Yuxin Wang, Zhan Wang +2
The authors use density functional theory, Wannier tight‑binding, and slave‑boson calculations to show that the intercalated La₂NiO₄ layer in superconducting La₅Ni₃O₁₁ is insulatin…
cond-mat.str-el2026
Itinerant Nature of Spin-Density-Wave Order in Ruddlesden-Popper Nickelates
Jiong Mei, Tianyang Xie, Kun Jiang
The nature of magnetism in layered Ruddlesden-Popper nickelates remains a central open question, particularly in light of recent observations of spin-wave-like magnetic excitations…
cond-mat.str-el2026
Spin Dynamics from Niu-Kleinman Adiabatic Approach and Slave Boson Mean Field Theory
Xuan Yang, Tianyang Xie, Shaohang Shi +2
Spin-wave excitations provide a central probe of magnetic order and electronic correlations in strongly correlated materials. In this work, we develop an adiabatic theory of spin d…