S. Schuppler

The difficulty of determining cation concentrations and oxygen stoichiometry in infinite-layer nickelate thin films has so far prevented clear experimental identification of the ni…

cond-mat.mtrl-sci2025

Unveiling Excitonic Insulator Signatures in Ta $_{2}$ NiSe $_{5}$

Nour Maraytta, Peter Nagel, Fatemeh Ghorbani +10

The high-temperature phase of Ta $_{2}$ NiSe $_{5}$ , a near-zero-gap semiconductor ( $E_{G}$ = 0), is a promising candidate for an excitonic insulator. Given the dome-like…

cond-mat.mtrl-sci2023

A review and outlook on anionic and cationic redox in Ni-, Li- and Mn-rich layered oxides LiMeO2 (Me = Li, Ni, Co, Mn)

Bixian Ying, Zhenjie Teng, Sarah Day +13

The present work reviews the charge compensation in Ni based layered oxides (LiNi1-xMexO2 with x <= 0.2, Me = Co, Mn, space group R-3m) relating performance parameters to changes i…

cond-mat.supr-con2020★ 23 cited

Rotational symmetry breaking at the incommensurate charge-density-wave transition in Ba(Ni,Co) $_{2}$ (As,P) $_{2}$ : Possible nematic phase induced by charge/orbital fluctuations

Michael Merz, Liran Wang, Thomas Wolf +3

Nematic phase transitions in high-temperature superconductors have a strong impact on the electronic properties of these systems. BaFe $_{2}$ As $_{2}$ ,\@ with an established nematic tran…

cond-mat.mtrl-sci2020

Revealing the site selective local electronic structure of Co $_{3}$ O $_{4}$ using $2 p 3 d$ resonant inelastic X-ray scattering

Ru-Pan Wang, Meng-Jie Huang, Atsushi Hariki +9

We investigate mixed-valence oxide Co $_{3}$ O $_{4}$ using Co $2 p 3 d$ resonant inelastic X-ray scattering (RIXS). By setting resonant edges at Co $^{2 +}$ and Co $^{3 +}$ ions, the $dd$ excit…

cond-mat.mtrl-sci2020★ 1 cited

On the microscopic origin of reversible and irreversible reactions of LiNixCoyMnx cathode materials: Ni-O hybrid bond formation vs. cationic and anionic redox

Karin Kleiner, Claire A. Murray, Cristina Grosu +5

Energy density limitations of layered oxides with different Ni contents, i.e., of the conventional cathode materials in Li-ion batteries, are investigated across the first discharg…

From perovskite to infinite-layer nickelates: hole concentration from x-ray absorption

Unveiling Excitonic Insulator Signatures in Ta2​NiSe5​

A review and outlook on anionic and cationic redox in Ni-, Li- and Mn-rich layered oxides LiMeO2 (Me = Li, Ni, Co, Mn)

Rotational symmetry breaking at the incommensurate charge-density-wave transition in Ba(Ni,Co)2​(As,P)2​: Possible nematic phase induced by charge/orbital fluctuations

Revealing the site selective local electronic structure of Co3​O4​ using 2p3d resonant inelastic X-ray scattering

On the microscopic origin of reversible and irreversible reactions of LiNixCoyMnx cathode materials: Ni-O hybrid bond formation vs. cationic and anionic redox

Unveiling Excitonic Insulator Signatures in Ta $_{2}$ NiSe $_{5}$

Rotational symmetry breaking at the incommensurate charge-density-wave transition in Ba(Ni,Co) $_{2}$ (As,P) $_{2}$ : Possible nematic phase induced by charge/orbital fluctuations

Revealing the site selective local electronic structure of Co $_{3}$ O $_{4}$ using $2 p 3 d$ resonant inelastic X-ray scattering