K. Kummer

activity

20122026

most citedDispersive charge density wave excitations and temperature dependent commensuration in Bi2Sr2CaCu2O8+δ

140 citations · 343 across the 28 of their papers we have counts for

collaborators

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24 papers · 1 filter

cond-mat.str-el2026

Positive Temperature Coefficient of Anisotropy due to $d^{6} L$ Groundstate in $ε$ -Fe $_{2}$ O $_{3}$

Rachel Nickel, Kurt Kummer, Johan van Lierop

Positive anisotropy temperature coefficients ( $d K / d T > 0$ ) usually arise from hybridization between magnetic 3d states and strongly spin-orbit-coupled (SOC) subsystems. Yet $ε$ -Fe$_2…

cond-mat.str-el2026

Machine-learning test of the single-ion model for $dd$ excitations in cuprates

Maryia Zinouyeva, Leonardo Martinelli, Riccardo Arpaia +12

We investigate $dd$ excitations in Resonant Inelastic X-ray Scattering spectra of YBa $_{2}$ Cu $_{3}$ O $_{6}$ and La $_{2}$ CuO $_{4}$ using the local single-ion model. The data are analyzed by co…

cond-mat.str-el2026

Direct High-Magnetic-Field Coupling to Stripe Order in a Cuprate Superconductor

Leonardo Martinelli, Izabela Biało, Jens Oppliger +47

Superconductivity in cuprates emerges out of a complex normal state that hosts density waves, pseudogap physics, and strange metal properties. Here, we access this normal state by…

cond-mat.str-el2026

Contrasting Spin Excitations in Octahedral and Square-Planar n=8 Ruddlesden-Popper Nickelates

K. Scott, H. LaBollita, G. A. Pan +15

The discovery of superconductivity in reduced square-planar nickelates marked a major advance in identifying structural and electronic analogs to the high- $T_{c}$ cuprates. The more…

cond-mat.str-el2025

Crystal field excitations in rattling clathrate CeBa $_{7}$ Au $_{6}$ Si $_{40}$

Michelangelo Tagliavini, Federico Mazza, Xinlin Yan +6

We investigate the local crystal-field environment of cerium in the clathrate compound CeBa $_{7}$ Au $_{6}$ Si $_{40}$ (Ce-BAS) using resonant inelastic x-ray scattering (RIXS) and magneti…

cond-mat.str-el2025

Weak Itinerant Ferromagnetism (WIFM) in MAX phase compound Cr $_{1.9}$ Fe $_{0.1}$ GeC

Suman Mondal, Mohamad Numan, Kurt Kummer +2

Magnetic MAX phase compounds are important materials for studying the two-dimensional magnetism because of their layered crystallographic structure. The hexagonal MAX phase compoun…

Positive Temperature Coefficient of Anisotropy due to d6L Groundstate in ε-Fe2​O3​

Machine-learning test of the single-ion model for dd excitations in cuprates

Direct High-Magnetic-Field Coupling to Stripe Order in a Cuprate Superconductor

Contrasting Spin Excitations in Octahedral and Square-Planar n=8 Ruddlesden-Popper Nickelates

Crystal field excitations in rattling clathrate CeBa7​Au6​Si40​

Weak Itinerant Ferromagnetism (WIFM) in MAX phase compound Cr1.9​Fe0.1​GeC

Positive Temperature Coefficient of Anisotropy due to $d^{6} L$ Groundstate in $ε$ -Fe $_{2}$ O $_{3}$

Machine-learning test of the single-ion model for $dd$ excitations in cuprates

Crystal field excitations in rattling clathrate CeBa $_{7}$ Au $_{6}$ Si $_{40}$

Weak Itinerant Ferromagnetism (WIFM) in MAX phase compound Cr $_{1.9}$ Fe $_{0.1}$ GeC