206 citations · 1.1k across the 64 of their papers we have counts for
64 papers
Layer Architecture Shapes Electronic, Magnetic, and Lattice Interactions in Ruddlesden-Popper Nickelates
W. He, X. Guo, X. Luo +18
The discovery of superconductivity in Ruddlesden-Popper nickelates has raised a central question: how does layer architecture shape the electronic, magnetic, and lattice interactio…
Posterior Inference of Hamiltonian Parameters from RIXS Spectroscopy
Samuel Klein, Thomas M. Linker, Louis Conreux +14
We present the first application of simulation-based inference to resonant inelastic X-ray scattering spectroscopy. Using truncated marginal neural ratio estimation to efficiently…
Interlayer Five-Spin Polaron in Superconducting Bilayer Nickelates
Jiarui Li, Christopher T. Parzyck, Eder G. Lomeli +19
The discovery of high- superconductivity in Ruddlesden-Popper nickelates has sparked substantial effort towards understanding unconventional electronic states beyond a traditi…
Magnetic order, magnons, and crystal fields in van der Waals CeSiI
Wolfgang Simeth, Connor A. Occhialini, Michael E. Ziebel +12
We report neutron, X-ray absorption, and resonant X-ray spectroscopy of magnetic excitations in the new heavy-fermion van-der-Waals superconductor CeSiI. We determined effective Ha…
Excitations across the equilibrium and photoinduced `hidden' states of magnetoresistive manganites
Shiyu Fan, Feng Jin, Taehun Kim +16
"Hidden" phases, generated using ultrafast laser pulses (few hundred femtoseconds), with properties distinct from thermodynamic equilibrium, are appealing for technologies because…
Superconducting phase diagram of multi-layer square-planar nickelates
Grace A. Pan, Dan Ferenc Segedin, Sophia F. R. TenHuisen +21
The discovery of superconductivity in square-planar nickelates has offered a rich materials platform to explore the origins of cuprate-like superconductivity. Experimental investig…
Stability of the Local Ni Electronic Structure to -site Disorder in the Pyrochlore Antiferromagnet NaCaNiF
M. F. DiScala, A. de la Torre, J. W. Krizan +5
NaCaNiF is a unique example of spin-1 Heisenberg antiferromagnet on the pyrochlore lattice, but the presence of Na/Ca -site disorder complicates the local…
Observation of correlated plasmons in low-valence nickelates
Y. Shen, W. He, J. Sears +13
The discovery of nickelate superconductors has opened a new arena for studying the behavior of correlated electron liquids that give rise to unconventional superconductivity. While…
Structural origin of resonant diffraction in RuO
Connor A Occhialini, Christie Nelson, Alessandro Bombardi +12
We report Ru L-edge resonant X-ray diffraction studies on single crystal and (001) epitaxial films of RuO. We investigate the distinct and refl…
Observing Differential Spin Currents by Resonant Inelastic X-ray Scattering
Yanhong Gu, Joseph Barker, Jiemin Li +12
Controlling spin currents, i.e., the flow of spin angular momentum, in small magnetic devices is the principal objective of spin electronics, a main contender for future energy eff…
Anisotropic electron damping and energy gap in BiSrCaCuO
Jiemin Li, Yanhong Gu, Takemi Yamada +9
The many body electron-electron interaction in cuprates causes the broadening of the electronic bands in \textit{\textbf{k}}-space, leading to a deviation from the standard Fermi l…
Unconventional polaronic ground state in superconducting LiTiO
Zubia Hasan, Grace A. Pan, Harrison LaBollita +23
Geometrically frustrated lattices can display a range of correlated phenomena, ranging from spin frustration and charge order to dispersionless flat bands due to quantum interferen…
Evidence of electronic states driving current-induced insulator-to-metal transition
V. K. Bhartiya, R. Hartmann, F. Forte +16
On demand current-driven insulator-to-metal transition (IMT) is pivotal for the next generation of energy-efficient and scalable microelectronics. IMT is a key phenomenon observed…
Magnetic excitations in NdNiO Ruddlesden-Popper nickelates observed via resonant inelastic x-ray scattering
Sophia F. R. TenHuisen, Grace A. Pan, Qi Song +16
Magnetic interactions are thought to play a key role in the properties of many unconventional superconductors, including cuprates, iron pnictides, and square-planar nickelates. Sup…
Topotactic Reduction-Driven Crystal Field Excitations in Brownmillerite Manganite Thin Films
Feng Jin, Shiyu Fan, Mingqiang Gu +12
Topotactic reduction of perovskite oxides offers a powerful approach for discovering novel phenomena, such as superconducting infinite-layer nickelates and polar metallicity, and i…
Doping dependence of 2-spinon excitations in the doped 1D cuprate BaCuO
Jiarui Li, Daniel Jost, Ta Tang +12
Recent photoemission experiments on the quasi-one-dimensional Ba-based cuprates suggest that doped holes experience an attractive potential not captured using the simple Hubbard mo…
Spin-forbidden excitations in the magneto-optical spectra of CrI tuned by covalency
Connor A. Occhialini, Luca Nessi, Luiz G. P. Martins +10
Spin-forbidden () multiplet excitations and their coupling to magnetic properties are of increasing importance for magneto-optical studies of correlated materials. Nonet…
Beyond-Hubbard pairing in a cuprate ladder
Hari Padma, Jinu Thomas, Sophia TenHuisen +13
The Hubbard model is believed to capture the essential physics of cuprate superconductors. However, recent theoretical studies suggest that it fails to reproduce a robust and homog…
Observation of anisotropic dispersive dark exciton dynamics in CrSBr
J. Sears, B. Zager, W. He +15
Many-body excitons in CrSBr are attracting intense interest in view of their highly anisotropic magneto-optical coupling and their potential for novel optical interfaces within spi…
Magnetic excitations and absence of charge order in the van der Waals ferromagnet FeGeTe
V. K. Bhartiya, T. Kim, J. Li +12
Understanding the ground state of van der Waals (vdW) magnets is crucial for designing devices leveraging these platforms. Here, we investigate the magnetic excitations and charge…
Superconductivity in the parent infinite-layer nickelate NdNiO
C. T. Parzyck, Y. Wu, L. Bhatt +14
We report evidence for superconductivity with onset temperatures up to 11 K in thin films of the infinite-layer nickelate parent compound NdNiO. A combination of oxide molecula…
Highly Tunable Ru-dimer Molecular Orbital State in 6H-perovskite BaMRuO
Bo Yuan, Beom Hyun Kim, Qiang Chen +7
Molecular orbital (MO) systems with clusters of heavy transition metal (TM) ions are one of the most important classes of model materials for studying the interplay between local p…
Nature of excitons and their ligand-mediated delocalization in nickel dihalide charge-transfer insulators
Connor A. Occhialini, Yi Tseng, Hebatalla Elnaggar +7
The fundamental optical excitations of correlated transition-metal compounds are typically identified with multielectronic transitions localized at the transition-metal site, such…
Collective nature of orbital excitations in layered cuprates in the absence of apical oxygens
Leonardo Martinelli, Krzysztof Wohlfeld, Jonathan Pelliciari +19
We have investigated the 3d orbital excitations in CaCuO2 (CCO), Nd2CuO4 (NCO), and La2CuO4 (LCO) using high-resolution resonant inelastic x-ray scattering. In LCO they behave as w…