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Kink in cuprates: the role of the low-energy density of states
E. Razzoli, F. Boschini, M. Zonno +14
The 40-70 meV band-structure renormalization (so-called kink) in high-temperature cuprate superconductors - which has been mainly interpreted in terms of electron-boson coupling -…
Observation of helimagnetism in the candidate ferroelectric CrI
John A. Schneeloch, Shunshun Liu, Prasanna V. Balachandran +2
CrI is a quasi-one dimensional (1D) van der Waals (vdW) system that exhibits helimagnetism that propagates along the ribbons. This was determined from neutron time-of-flight…
Detection of a two-phonon mode in a cuprate superconductor via polarimetric RIXS
Kirsty Scott, Elliot Kisiel, Flora Yakhou +15
Recent improvements in the energy resolution of resonant inelastic x-ray scattering experiments (RIXS) at the Cu-L edge have enabled the study of lattice, spin, and charge exci…
Consistency between reflection M-EELS and optical spectroscopy measurements of the long-wavelength density response of BiSrCaCuO
Jin Chen, Xuefei Guo, Christian Boyd +11
The density fluctuation spectrum captures many fundamental properties of strange metals. Using momentum-resolved electron energy-loss spectroscopy (M-EELS), we recently showed that…
Antiferromagnetic-ferromagnetic homostructures with Dirac magnons in van der Waals magnet CrI
John A. Schneeloch, Luke Daemen, Despina Louca
Van der Waals (vdW) Dirac magnon system CrI, a potential host of topological edge magnons, orders ferromagnetically (FM) (T K) in the bulk, but antiferromagnetic (AFM) o…
FeTeSe: a delicate and tunable Majorana material
Fazhi Yang, Giao Ngoc Phan, Renjie Zhang +10
We report the observation for the p electron band and the band inversion in FeTeSe with angle-resolved photoemission spectroscopy. Furthermore, we found…
Low-energy quasi-circular electron correlations with charge order wavelength in
K. Scott, E. Kisiel, T. J. Boyle +20
In the study of dynamic charge order correlations in the cuprates, most high energy-resolution resonant inelastic x-ray scattering (RIXS) measurements have focused on momenta along…