Collective magnetic Higgs excitation in a pyrochlore ruthenate

D Wulferding, J Kim, MK Kim, Y Yang, JH Lee… - npj Quantum …, 2023 - nature.com
The emergence of scalar Higgs-type amplitude modes in systems where symmetry is
spontaneously broken has been a highly successful, paradigmatic description of phase …

Interacting topological Dirac magnons

H Sun, D Bhowmick, B Yang, P Sengupta - Physical Review B, 2023 - APS
In this work, we study the magnon-magnon interaction effect in typical honeycomb
ferromagnets consisting of van der Waals–bonded stacks of honeycomb layers, eg …

[HTML][HTML] Role of topology in compensated magnetic systems

H Reichlova, D Kriegner, A Mook, M Althammer… - APL Materials, 2024 - pubs.aip.org
Topology plays a crucial and multifaceted role in solid state physics, leading to a remarkable
array of newly investigated materials and phenomena. In this Perspective, we provide a brief …

Linear scaling relationship of Néel temperature and dominant magnons in pyrochlore ruthenates

JH Lee, D Wulferding, J Kim, D Song, SR Park, C Kim - Physical Review B, 2023 - APS
We present a systematic Raman spectroscopy study on a series of pyrochlore ruthenates, a
system which is not yet clearly settled on its magnetic origin and structure. Apart from the …

Magnon excitation and spin-phonon coupling in

M Rosalin, P Telang, S Singh, DVS Muthu, AK Sood - Physical Review B, 2024 - APS
We present a comparative study of the temperature-dependent Raman scattering of
pyrochlore iridates A 2 Ir 2 O 7, where A= Gd, Dy, and Er, spanning the temperature range …

Phonon excitations in Eu2Ir2O7 probed by inelastic x-ray scattering

H Wang, R Kaneko, K Ueda, Y Zhang… - Journal of Physics …, 2024 - iopscience.iop.org
The study of phonon dynamics and its interplay with magnetic ordering is crucial for
understanding the unique quantum phases in the pyrochlore iridates. Here, through inelastic …

Spin dynamics and possible topological magnons in non-stoichiometric pyrochlore iridate TbIrO studied by RIXS

Q Faure, A Toschi, JR Soh, E Lhotel, B Detlefs… - arXiv preprint arXiv …, 2024 - arxiv.org
We report a resonant inelastic X-ray scattering study on a single crystal of a non-
stoichiometric pyrochlore iridate Tb $ _ {2+ x} $ Ir $ _ {2-x} $ O $ _ {7-y} $($ x\simeq 0.25$) …

Ramification of complex magnetism in NdIrO observed by Raman scattering spectroscopy

Y Xu, Y Yang, J Teyssier, T Ohtsuki, Y Qiu… - arXiv preprint arXiv …, 2023 - arxiv.org
Using Raman scattering spectroscopy, we uncover a complex magnetic behavior of Nd $ _2
$ Ir $ _2 $ O $ _7 $, which stands out among magnetic pyrochlores by the lowest …