24 citations · 61 across the 14 of their papers we have counts for
16 papers
Orbital character and photoemission signatures of the A-pocket in infinite-layer nickelates
Leonard M. Verhoff, Michael Seidl, Liang Si +1
The orbital character of the so-called -pocket in infinite-layer nickelates remains under debate. We investigate bulk NdNiO using density-functional theory combined with dyn…
Tuning crystal-fields by He-irradiation and orbital Widom line in SrVO films
Matthias Pickem, Karsten Held, Jan M. Tomczak
Helium-ion irradiation of epitaxial SrVO/SrTiO films causes a metal-insulator transition, so far attributed to a Mott localization driven by a reduced kinetic energy. Using…
Heterostructuring as Gateway to Electron Doping of Nickelate Superconductors
Chao Deng, Motoharu Kitatani, Guiwen Jiang +7
Despite enormous expenditures in the research field, the electron-doped side of nickelate superconductors remains uncharted territory. Substituting the trivalent rare-earth cations…
Beyond the conventional Emery model: crucial role of long-range hopping for cuprate superconductivity
Eric Jacob, M. O. Malcolms, Viktor Christiansson +6
The Emery model is the quintessential model for cuprate superconductors. In his eponymous paper, Emery only considered the next-nearest-neighbor oxygen-copper hopping. Later, also…
Substrate and cation engineering for optimizing superconductivity in infinite-layer nickelates
Viktor Christiansson, Karsten Held
In a recent experiment [Nature 642, 58 (2025)], a new record for the superconducting critical temperature among infinite-layer nickelates has been reported in doped SmNiO…
Surfaces and interfaces of infinite-layer nickelates studied by dynamical mean-field theory
Leonard M. Verhoff, Liang Si, Karsten Held
Infinite-layer nickelate superconductors are typically synthesized as thin films and thus include, besides the more bulk-like inner layers, distinct surface and interface layers in…
Lattice dynamics of the infinite-layer nickelate LaNiO
Shohei Hayashida, Vignesh Sundaramurthy, Wenfeng Wu +8
Infinite-layer (IL) nickelates have rapidly emerged as a new class of superconductors. However, due to the technical challenges of their topotactic synthesis, they have so far been…
Topotactical Hydrogen Induced Single-Band -wave Superconductivity in LaNiO
Ying Gao, Wenfeng Wu, Zhaoxin Liu +2
LaNiO is an antiferromagnetic insulator with a structural resemblance to its cuprate counterpart, LaCuO. However, LaCuO has a Cu or 3 electronic…
Boosting the transparency of metallic SrNbO3 through Ti doping
Shammi Kumar, Liang Si, Karsten Held +3
In recent years, various materials have been developed to reduce the reliance of industries on Indium, a primary component of transparent conducting oxides (TCOs) used in the curre…
Closing in on possible scenarios for infinite-layer nickelates: comparison of dynamical mean-field theory with angular-resolved photoemission spectroscopy
Liang Si, Eric Jacob, Wenfeng Wu +6
Conflicting theoretical scenarios for infinite-layer nickelate superconductors have been hotly debated, particularly regarding whether {only} a single Ni-3 band is rel…
Local correlations necessitate waterfalls as a connection between quasiparticle band and developing Hubbard bands
Juraj Krsnik, Karsten Held
Waterfalls are anomalies in the angle-resolved photoemission spectrum where the energy-momentum dispersion is almost vertical, and the spectrum strongly smeared out. These anomalie…
Weyl nodes in CeBiPd revealed by dynamical mean-field theory
Martin Braß, Jan M. Tomczak, Karsten Held
Experimental studies have found unusual transport properties in CeBiPd which are potentially a consequence of the interplay between band-structure topology and electron…
Spin fluctuations sufficient to mediate superconductivity in nickelates
Paul Worm, Qisi Wang, Motoharu Kitatani +12
Infinite-layer nickelates show high-temperature superconductivity, and the experimental phase diagram agrees well with the one simulated within the dynamical vertex approximation (…
Fermi and Luttinger arcs: two concepts, realized on one surface
Paul Worm, Matthias Reitner, Karsten Held +1
We present an analytically solvable model for correlated electrons, which is able to capture the major Fermi surface modifications occurring in both hole- and electron-doped cuprat…
Unconventional superconductivity without doping: infinite-layer nickelates under pressure
Simone Di Cataldo, Paul Worm, Jan Tomczak +2
High-temperature unconventional superconductivity quite generically emerges from doping a strongly correlated parent compound, often (close to) an antiferromagnetic insulator. The…
Weyl points and spin-orbit coupling in copper-substituted lead phosphate apatite
Martin Braß, Liang Si, Karten Held
We study the impact of spin-orbit coupling on the topological band-properties of copper-substituted lead phosphate apatite using a combination of group-theoretical analysis and ful…