8 papers
orbital delocalization and magnetic collapse in superconducting (La,Pr)NiO films
Xiaoyang Chen, Wenliang Zhang, Fei Peng +20
The recent discovery of Ruddlesden--Popper (RP) nickelate thin-film superconductors has opened a new frontier in unconventional superconductivity. Its realization requires both com…
Electronic structures across superconductor-insulator transition in Ruddlesden-Popper bilayer nickelate films
Yu Miao, Runqing Luan, Yaqi Chen +22
High-transition-temperature () superconductivity is recently discovered in Ruddlesden-Popper (RP) nickelate films with extraordinarily strong oxidation. While investigating…
Superconductivity and Electronic Structures of Nickelate Thin Film Superstructures
Zihao Nie, Yueying Li, Wei Lv +14
Ruddlesden-Popper (RP) nickelates have emerged as a crucial platform for exploring the mechanisms of high-temperature superconductivity. However, the Fermi surface topology require…
Three-Dimensional Electronic Structures in Superconducting Ruddlesden-Popper Bilayer Nickelate Films
Yueying Li, Lizhi Xu, Wei Lv +13
Beyond the quasi-two-dimensional (2D) paradigm of cuprates, the role of the third dimension of the Ruddlesden-Popper bilayer nickelates is essential to decoding their superconducti…
Orbital-selective charge transfer drives two-step negative thermal expansion structural transitions in PbTa2Se4
Peng Li, Xiaohui Yang, Wenhua Song +7
The negative thermal expansion (NTE) effect has been found generally combined with structural phase transitions. However, the charge and orbital freedoms of the NTE has not been we…
Nodeless superconducting gap and electron-boson coupling in (La,Pr,Sm)NiO films
Jianchang Shen, Guangdi Zhou, Yu Miao +18
The discovery of superconductivity in Ruddlesden-Popper (RP) bilayer nickelate films under ambient pressure provides an unprecedented opportunity to directly investigate electronic…