A tale of two kinds of superconducting nickelates
APA
(2024). A tale of two kinds of superconducting nickelates. SciVideos. https://www.youtube.com/live/BzXn7gmEhjs
MLA
A tale of two kinds of superconducting nickelates. SciVideos, Jul. 19, 2024, https://www.youtube.com/live/BzXn7gmEhjs
BibTex
@misc{ scivideos_ICTS:29145,
doi = {},
url = {https://www.youtube.com/live/BzXn7gmEhjs},
author = {},
keywords = {},
language = {en},
title = {A tale of two kinds of superconducting nickelates},
publisher = {},
year = {2024},
month = {jul},
note = {ICTS:29145 see, \url{https://scivideos.org/icts-tifr/29145}}
}
Abstract
Layered nickelates have been of interest since the early days of high-Tc superconducting (SC) cuprates as possible additional representants of unconventional superconductors. But only in 2019, a stable SC phase has been identified in thin-films of Sr-doped NdNiO2 with a Tc∼ 20 K [1]. Further SC members from this class of low-valence nickelates have been spotted afterwards. And just when the debate about the similarity between SC cuprates and nickelates, both with akin 3d9−x formal transition-metal valence, was at its zenith, a SC bilayer nickelate of formal 3d8−x valence was detected at high pressure with Tc∼ 80 K in spring 2023 [2]. Interestingly, according to our theoretical investigations [3,4] all these SC nickelates have a multiorbital Ni-eg flat-band scenario in common.
In this talk, it will be shown that an advanced combination of density functional theory (DFT) and dynamical mean-field theory (DMFT) provides unique access to this novel playground of high-Tc nickelate superco...