250 citations · 890 across the 17 of their papers we have counts for
13 papers · 1 filter
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…
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…
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…