250 citations · 890 across the 17 of their papers we have counts for
17 papers
Stacking disorder in -RuCl via x-ray three-dimensional difference pair distribution function analysis
J. Sears, Y. Shen, M. J. Krogstad +10
The van der Waals layered magnet -RuCl offers tantalizing prospects for the realization of Majorana quasiparticles. Efforts to understand this are, however, hampered by inco…
Resonant elastic X-ray scattering of antiferromagnetic superstructures in EuPtSi
Wolfgang Simeth, Andreas Bauer, Christian Franz +6
We report resonant elastic X-ray scattering (REXS) of long-range magnetic order in EuPtSi, combining different scattering geometries with full linear polarization anal…
Structure of Charge Density Waves in LaBaCuO
J. Sears, Y. Shen, M. J. Krogstad +8
Although charge-density wave (CDW) correlations exist in several families of cuprate supercon-ductors, they exhibit substantial variation in CDW wavevector and correlation length,…
Dual-stage structural response to quenching charge order in magnetite
Wei Wang, Junjie Li, Lijun Wu +8
The Verwey transition in magnetite (Fe3O4 ) is the prototypical metal-insulator transition and has eluded a comprehensive explanation for decades. A major element of the challenge…
Magnetic Excitations in Square Lattice Iridates: Contrast between BaIrO and SrIrO
J. P. Clancy, H. Gretarsson, A. Lupascu +9
We report a resonant inelastic x-ray scattering (RIXS) investigation of ultra-thin epitaxial films of BaIrO, and compare their low energy magnetic and spin-orbit excitation…
Antiferromagnetic Excitonic Insulator State in Sr3Ir2O7
D. G. Mazzone, Y. Shen, H. Suwa +13
Excitonic insulators are usually considered to form via the condensation of a soft charge mode of bound electron-hole pairs. This, however, presumes that the soft exciton is of spi…
Emergence of spinons in layered trimer iridate Ba4Ir3O10
Y. Shen, J. Sears, G. Fabbris +13
Spinons are well-known as the elementary excitations of one-dimensional antiferromagnetic chains, but means to realize spinons in higher dimensions is the subject of intense resear…
Role of Oxygen States in the Low Valence Nickelate LaNiO
Y. Shen, J. Sears, G. Fabbris +13
The discovery of superconductivity in square-planar low valence nickelates has ignited a vigorous debate regarding their essential electronic properties: Do these materials have ap…
BiSe thin films heteroepitaxially grown on -RuCl
Joon Young Park, Janghyun Jo, Jennifer A. Sears +4
Combining various two-dimensional materials into novel van der Waals (vdW) heterostructures has been shown to lead to new emergent quantum systems. A novel heterostructure composed…
Ferromagnetic Kitaev interaction and the origin of large magnetic anisotropy in -RuCl
J. A. Sears, Li Ern Chern, Subin Kim +4
-RuCl is drawing much attention as a promising candidate Kitaev quantum spin liquid. However, despite intensive research efforts, controversy remains about the form of the b…
Spin waves and spin-state transitions in a ruthenate high-temperature antiferromagnet
H. Suzuki, H. Gretarsson, H. Ishikawa +16
Ruthenium compounds play prominent roles in materials research ranging from oxide electronics to catalysis, and serve as a platform for fundamental concepts such as spin-triplet su…
Neutron Scattering Investigation of Rhenium Orbital Ordering in Double Perovskite CaFeReO
Bo Yuan, J. P. Clancy, J. A. Sears +9
We have carried out inelastic neutron scattering experiments to study magnetic excitations in ordered double perovskite CaFeReO. We found a well-defined magnon mode with a…
Pressure-driven collapse of the relativistic electronic ground state in a honeycomb iridate
J. P. Clancy, H. Gretarsson, J. A. Sears +16
The electronic ground state in many iridate materials is described by a complex wave-function in which spin and orbital angular momenta are entangled due to relativistic spin-orbit…
Large field-induced gap of Kitaev-Heisenberg paramagnons in -RuCl
Richard Hentrich, Anja U. B. Wolter, Xenophon Zotos +12
The honeycomb Kitaev-Heisenberg model is a source of a quantum spin liquid with Majorana fermions and gauge flux excitations as fractional quasiparticles. In the quest of finding a…
Phase Diagram of -RuCl in an in-plane Magnetic Field
J. A. Sears, Y. Zhao, Z. Xu +2
The low-temperature magnetic phases in the layered honeycomb lattice material -RuCl have been studied as a function of in-plane magnetic field. In zero field this material o…
ARPES study of the Kitaev Candidate -RuCl
Xiaoqing Zhou, Haoxiang Li, Justin Waugh +7
-RuCl has been hinted as a spin-orbital-assisted Mott insulator in proximity to a Kitaev spin liquid state. Here we present ARPES measurements on single crystal -RuCl…
Sudden reversal in the pressure dependence of Tc in the iron-based superconductor CsFe2As2: A possible link between inelastic scattering and pairing symmetry
F. F. Tafti, J. P. Clancy, M. Lapointe-Major +11
We report a sudden reversal in the pressure dependence of Tc in the iron-based superconductor CsFe2As2, similar to that discovered recently in KFe2As2 [Tafti et al., Nat. Phys. 9,…