P. Nagel

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-con2022★ 8 cited

Electron-momentum dependence of electron-phonon coupling underlies dramatic phonon renormalization in YNi $_{2}$ B $_{2}$ C

Philipp Kurzhals, Geoffroy Kremer, Thomas Jaouen +12

Electron-phonon coupling, i.e., the scattering of lattice vibrations by electrons and vice versa, is ubiquitous in solids and can lead to emergent ground states such as superconduc…

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…

cond-mat.mtrl-sci2020

Observation of a possible diluted ferromagnetism above room temperature in cobalt-substituted LaTa(O,N)3-d

Cora Bubeck, Eberhard Goering, Robert Lawitzki +11

Since 2000, the intensive effort in materials research to develop a diluted magnetic semiconductor exhibiting high-temperature (HT) ferromagnetism above room temperature was not su…

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

Electron-momentum dependence of electron-phonon coupling underlies dramatic phonon renormalization in YNi2​B2​C

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

Observation of a possible diluted ferromagnetism above room temperature in cobalt-substituted LaTa(O,N)3-d

Electron-momentum dependence of electron-phonon coupling underlies dramatic phonon renormalization in YNi $_{2}$ B $_{2}$ C

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