1.1k citations · 4.4k across the 58 of their papers we have counts for
58 papers
Ultrasensitive strain modulation of terahertz magnons at a magnetic phase transition
Lichen Wang, Sajna Hameed, Yiran Liu +8
Antiferromagnets typically host spin-wave (magnon) excitations in the terahertz (THz) regime, offering a promising platform for high-speed magnonic information technologies. Harnes…
Comparative Raman study of Ruddlesden-Popper nickelates and the monolayer-trilayer polymorph
Vignesh Sundaramurthy, Abhi Suthar, Pascal Puphal +12
Ruddlesden-Popper (RP) nickelates have attracted intense interest following the discovery of superconductivity in several members of the series, including bilayer (BL) LaNi…
Uniaxial strain tuning of polar lattice vibrations in KTaO and SrTiO
I. Khayr, N. Somun, S. Hameed +11
The interplay of electronic and structural degrees of freedom is a prominent feature of many quantum materials and of particular interest in systems with strong ferroelectric fluct…
Evolution of spin excitations in superconducting LaCaCuO from the underdoped to the heavily overdoped regime
S. Hameed, Y. Liu, M. Knauft +8
We investigate high-energy spin excitations in hole-doped LaCaCuO films across a broad Ca doping range using resonant inelastic x-ray scatteri…
Multiorbital character of the density wave in trilayer nickelate superconductors
A. Suthar, V. Sundaramurthy, M. Bejas +15
Ruddlesden-Popper nickelates exhibit high-temperature superconductivity closely intertwined with charge and spin density waves. However, fundamental questions persist regarding the…
Hybridization of lattice and charge order excitations in a superconducting cuprate
S. M. Souliou, D. Ishikawa, R. Heid +9
The ubiquitous tendency of superconducting cuprates to form charge density waves (CDWs) has reignited interest in the nature of their electron-phonon interaction and its role in sh…
Interplay between electronic and lattice superstructures in LaCaCuO
S. Hameed, Y. Liu, K. S. Rabinovich +11
Complex oxides are well known to develop oxygen ordering patterns with well defined periodicities, but their interplay with electronic correlations remains largely unexplored. Here…
Plasmon dispersion in bilayer cuprate superconductors
M. Bejas, V. Zimmermann, D. Betto +11
The essential building blocks of cuprate superconductors are two-dimensional CuO sheets interspersed with charge reservoir layers. In bilayer cuprates, two closely spaced CuO$_…
Detection of a two-phonon mode in a cuprate superconductor via polarimetric RIXS
Kirsty Scott, Elliot Kisiel, Flora Yakhou +15
Recent improvements in the energy resolution of resonant inelastic x-ray scattering experiments (RIXS) at the Cu-L edge have enabled the study of lattice, spin, and charge exci…
Using strain to uncover the interplay between two- and three-dimensional charge density waves in high-temperature superconducting YBaCuO
Igor Vinograd, Sofia Michaela Souliou, Amir-Abbas Haghighirad +14
Uniaxial pressure provides an efficient approach to control the competition between charge density waves (CDWs) and superconductivity in underdoped YBaCuO. I…
Evolution of plasmon excitations across the phase diagram of the cuprate superconductor LaSrCuO
M. Hepting, T. D. Boyko, V. Zimmermann +19
We use resonant inelastic x-ray scattering (RIXS) at the O - and Cu -edges to investigate the doping- and temperature dependence of low-energy plasmon excitations in La$_{2-x…
Fano interference of the Higgs mode in cuprate high-Tc superconductors
Hao Chu, Sergey Kovalev, Zi Xiao Wang +31
Despite decades of search for the pairing boson in cuprate high-Tc superconductors, its identity still remains debated to date. For this reason, spectroscopic signatures of electro…
Non-collinear and strongly asymmetric polar moments at back-gated SrTiO3 interfaces
Fryderyk Lyzwa, Yurii G. Pashkevich, Premysl Marsik +15
The highly mobile electrons at the interface of SrTiO3 with other oxide insulators, such as LaAlO3 or AlOx, are of great current interest. A vertical gate voltage allows controllin…
In-plane Isotropy of the Low Energy Phonon Anomalies in YBaCuO
Sofia-Michaela Souliou, Kaushik Sen, Rolf Heid +8
We study the temperature dependence of the low energy phonons in the reciprocal plane of the highly ordered ortho-II YBaCuO cuprate high temperature su…
Control of the metal-insulator transition in NdNiO thin films through the interplay between structural and electronic properties
Y. E. Suyolcu, K. Fürsich, M. Hepting +10
Heteroepitaxy offers a new type of control mechanism for the crystal structure, the electronic correlations, and thus the functional properties of transition-metal oxides. Here, we…
Lattice dynamics and structural transition of the hyperhoneycomb iridate -LiIrO investigated by high-pressure Raman scattering
Sungkyun Choi, Heung-Sik Kim, Hun-Ho Kim +8
We report a polarized Raman scattering study of the lattice dynamics of -LiIrO under hydrostatic pressures up to 7.62 GPa. At ambient pressure, -LiIrO exhibit…
Suppression of superconductivity by charge density wave order in YBaCuO
Mark E. Barber, Hun-ho Kim, Toshinao Loew +6
Hole-doped cuprate superconductors show a ubiquitous tendency towards charge order. Although onset of superconductivity is known to suppress charge order, there has not so far been…
Inhomogeneous ferromagnetism mimics signatures of the topological Hall effect in SrRuO films
Gideok Kim, K. Son, Y. E. Suyolcu +11
Topological transport phenomena in magnetic materials are a major topic of current condensed matter research. One of the most widely studied phenomena is the ``topological Hall eff…
Imprint of charge and oxygen orders on Dy ions in DyBaCuO thin films probed by resonant x-ray scattering
Davide Betto, Martin Bluschke, Daniel Putzky +8
We used resonant elastic x-ray scattering at the Cu and Dy edges to investigate charge order in thin films of underdoped DyBaCuO (DyBCO) epitaxially gro…
Charge density waves in YBaCuO probed by resonant x-ray scattering under uniaxial compression
H. -H. Kim, E. Lefrançois, K. Kummer +14
We report a comprehensive Cu L-edge resonant x-ray scattering study of two- and three-dimensional (2D and 3D) incommensurate charge correlations in single crystals of the under…
Backfolded acoustic phonons in metal-oxide superlattices
F. Lyzwa, A. Chan, J. Khmaladze +5
We report the observation of low-frequency modes in the Raman spectra of thin-film superlattices of the high-temperature superconductor YBaCuO and various…
Electronic and vibrational signatures of ruthenium vacancies in SrRuO thin films
Gideok Kim, Y. Eren Suyolcu, J. Herrero-Martin +12
The synthesis of stoichiometric SrRuO thin films has been a challenge because of the high volatility of ruthenium oxide precursors, which gives rise to ruthenium vacancies…
Selective formation of apical oxygen vacancies in LaSrCuO
Gideok Kim, Georg Christiani, Gennady Logvenov +4
The superconducting properties of high-\tc\ materials are functions of carriers concentration, which is controlled by the concentration of defects including heterovalent cations, i…
Compressive-strain induced enhancement of exchange interactions and short-range magnetic order in SrIrO investigated by Raman spectroscopy
A. Seo, P. P. Stavropoulos, H. -H. Kim +7
We have carried out Raman spectroscopy experiments to investigate two-magnon excitations in epitaxial thin films of the quasi-two-dimensional antiferromagnetic Mott insulator Sr$_2…