Zobrazeno 1 - 10
of 6 284
pro vyhledávání: '"Nickelates"'
Controlled introduction of oxygen vacancies offers an effective route to induce metal-to-insulator transition in strongly correlated rare-earth nickelates ($R$NiO$_3$) at room temperature. However, the role played by the rare-earth cations on the str
Externí odkaz:
http://arxiv.org/abs/2412.19700
Autor:
Zhao, Yi-Feng, Botana, Antia S.
Signatures of superconductivity under pressure have recently been reported in the bilayer La$_3$Ni$_2$O$_7$ and trilayer La$_4$Ni$_3$O$_{10}$ Ruddlesden-Popper (RP) nickelates with general chemical formula La$_{n+1}$Ni$_n$O$_{3n+1}$ ($n=$ number of p
Externí odkaz:
http://arxiv.org/abs/2412.04391
Autor:
Liu, Zhe, Li, Jie, Huo, Mengwu, Ji, Bingke, Hao, Jiahao, Dai, Yaomin, Ou, Mengjun, Li, Qing, Sun, Hualei, Xu, Bing, Lu, Yi, Wang, Meng, Wen, Hai-Hu
We report on optical studies of the Ruddlesden-Popper nickelates La$_{n+1}$Ni$_{n}$O$_{3n+1}$ with $n = 2$ (La$_{3}$Ni$_{2}$O$_{7}$), $n = 3$ (La$_{4}$Ni$_{3}$O$_{10}$) and $n = \infty$ (LaNiO$_{3}$). As the number of the NiO$_{6}$ octahedra layers $
Externí odkaz:
http://arxiv.org/abs/2411.08539
Motivated by the high temperature superconductivity observed in the bilayer nickelate La$_3$Ni$_2$O$_7$ and the spectroscopic evidences of strong electron correlations in this compound, we address the role of its multiorbital electron correlations by
Externí odkaz:
http://arxiv.org/abs/2412.21019
Publikováno v:
Physics of the Solid State. 2024. V. 66. No. 7. P. 1014-1018
Rare-earth orthonickelates RNiO3 are Jahn-Teller magnets, unstable with respect to the anti-Jahn-Teller disproportionation reaction with the formation of a system equivalent to a system of effective spin-triplet composite bosons moving in a non-magne
Externí odkaz:
http://arxiv.org/abs/2411.12613
Almost four decades of intense research have been invested to study the physics of high-T$_c$ cuprate superconductors. The recent discovery of high-T$_c$ superconductivity in pressurized bilayer nickelates and its potential similarities with cuprate
Externí odkaz:
http://arxiv.org/abs/2411.00269
Autor:
Sanchez-Manzano, D., Humbert, V., Gutiérrez-Llorente, A., Zhang, D., Santamaria, J., Bibes, M., Iglesias, L., Villegas, Javier E.
Characterizing the dimensionality of the superconducting state in the infinite-layer (IL) nickelates is crucial to understand its nature. Most studies have addressed the problem by studying the anisotropy of the upper critical fields. Yet, the domina
Externí odkaz:
http://arxiv.org/abs/2410.14341
Autor:
Lechermann, Frank
While key attention in transition-metal oxides is usually devoted to the $d$ states of the transition-metal ion, the O$(2p)$ states usually also carry important physics. We here examine these $p$ states in representatives of the novel superconducting
Externí odkaz:
http://arxiv.org/abs/2410.06891
Autor:
Li, Mingtao, Wang, Yiming, Pei, Cuiying, Zhang, Mingxin, Li, Nana, Guan, Jiayi, Amboage, Monica, Adama, N-Diaye, Kong, Qingyu, Qi, Yanpeng, Yang, Wenge
We report a comprehensive study of electronic band structure for single-layer (SL) and bilayer (BL) RP-nickelates probed by in-situ HP X-ray absorption near edge spectroscopy (XANES). At ambient pressure (AP), the energy splitting delta_E of d_3z^2-r
Externí odkaz:
http://arxiv.org/abs/2410.04230
Autor:
Nie, Jia-Cai, Chen, Xing-Yu, Bian, Yi, Wang, Xue-Yan, Shao, Ting-Na, Gao, Jing-Xin, Mao, Wei, Ge, Bing-Hui, Muller, Arnold, Chen, Jikun
The discovery of the superconductivity in the infinite-layer nickelates, as topotactically reduced from their respective perovskite percussors via co-annealing with CaH2, extends the understanding in superconductivity. Nevertheless, whether the incor
Externí odkaz:
http://arxiv.org/abs/2408.14818