105 citations · 427 across the 22 of their papers we have counts for
22 papers
The Co-Ir orbital hybridization in LaCaCoIrO double perovskite
L. Bufaiçal, L. S. I. Veiga, J. R. L. Mardegan +5
Here, we report on the structural, electronic, and magnetic properties of a polycrystalline sample of the LaCaCoIrO double-perovskite investigated by means of synchrotron x-ray…
Element resolved evidence of superdiffusive terahertz spin current arising from ultrafast demagnetization process
R. Gupta, F. Cosco, R. S. Malik +13
Using element-specific measurements of the ultrafast demagnetization of Ru/FeCo heterostructures, we show that Ru can exhibit a significant magnetic contrast (3% asym…
Photoinduced structural dynamics of multiferroic TbMnO
Elsa Abreu, Matteo Savoini, Larissa Boie +17
We use time-resolved hard x-ray diffraction to investigate the structural dynamics of the multiferroic insulator TbMnO in the low temperature antiferromagnetic and ferroelectri…
Hidden Charge Order in an Iron Oxide Square-Lattice Compound
Jung-Hwa Kim, Darren C. Peets, Manfred Reehuis +14
Since the discovery of charge disproportionation in the FeO square-lattice compound SrFeO by Mössbauer spectroscopy more than fifty years ago, the spatial ordering…
Sublattice spin reversal and field induced spin-canting across the magnetic compensation temperature in rare-earth iron garnet
Manik Kuila, Jose Renato Linares Mardegan, Akhil Tayal +2
In the present work sublattice spin reversal and spin-canting across the magnetic compensation temperature () are demonstrated in polycrystalline $Y_{…
Magnetic order of tetragonal CuO ultra-thin films
N. Ortiz Hernandez, Z. Salman, T. Prokscha +6
We present a detailed low-energy muon spin rotation and x-ray magnetic circular dichroism (XMCD) investigation of the magnetic structure in ultra-thin tetragonal (T)-CuO films. The…
Magnetic field dependent cycloidal rotation in pristine and Ge doped CoCrO
N Ortiz Hernandez, S Parchenko, J R L Mardegan +11
We report a soft x-ray resonant magnetic scattering study of the spin configuration in multiferroic thin films of CoGeCrO (Ge-CCO) and CoCrO (CC…
Structurally assisted melting of excitonic correlations in 1T-TiSe2
Max Burian, Michael Porer, Jose R. L. Mardegan +16
The simultaneous condensation of electronic and structural degrees of freedom gives rise to new states of matter, including superconductivity and charge-density-wave formation. Whe…
Correlation between electronic and structural orders in 1T-TiSe2
Hiroki Ueda, Michael Porer, José R. L. Mardegan +11
The correlation between electronic and crystal structures of 1T-TiSe2 in the charge density wave (CDW) state is studied by x-ray diffraction. Three families of reflections are used…
Ultrafast electron localization in a correlated metal
Jose R. L. Mardegan, Serhane Zerdane, Giulia Mancini +27
Ultrafast electron delocalization induced by a fs laser pulse is a well-known process and is the initial step for important applications such as fragmentation of molecules or laser…
Unveiling charge density wave quantum phase transitions by x-ray diffraction
F. B. Carneiro, L. S. I. Veiga, J. R. L. Mardegan +4
We investigate the thermal-driven charge density wave (CDW) transition of two cubic superconducting intermetallic systems Lu(Pt1-xPdx)2In and (Sr1-xCax)3Ir4Sn13 by means of x-ray d…
Possible quantum paramagnetism in compressed SrIrO
D. Haskel, G. Fabbris, J. H. Kim +9
The effect of compression on the magnetic ground state of SrIrO is studied with x-ray resonant techniques in the diamond anvil cell. The weak interlayer exchange coupling b…
Possible quantum fluctuations in the vicinity of the quantum critical point of revealed by high-energy X-ray diffraction study
L. S. I. Veiga, J. R. L. Mardegan, M. v. Zimmermann +7
We explore the evolution of the structural phase transition of , a model system to study the interplay between structural quantum criticality and superc…
Coherent Epitaxial Semiconductor-Ferromagnetic Insulator InAs/EuS Interfaces: Band Alignment and Magnetic Structure
Yu Liu, Alessandra Luchini, Sara Martí-Sánchez +16
Hybrid semiconductor-ferromagnetic insulator heterostructures are interesting due to their tunable electronic transport, self-sustained stray field and local proximitized magnetic…
Magnetic and electronic properties at the gamma-Al2O3/SrTiO3 interface
J. R. L. Mardegan, D. V. Christensen, Y. Z. Chen +7
The magnetic and electronic nature of the gamma-Al2O3/SrTiO3 spinel/perovskite interface is explored by means of x-ray absorption spectroscopy. Polarized x-ray techniques combined…
Pressure effects on the structural and superconducting transitions in La3Co4Sn13
L. Mendonça-Ferreira, F. B. Carneiro, M. B. Fontes +8
La3Co4Sn13 is a superconducting material with transition temperature at Tc = 2.70 K, which presents a superlattice structural transition at T* ~ 150 K, a common feature for this cl…
Coupling of magnetic order and charge transport in the candidate Dirac semimetal EuCdAs
M. C. Rahn, J. -R. Soh, S. Francoual +7
We use resonant elastic x-ray scattering to determine the evolution of magnetic order in EuCdAs below \,K, as a function of temperature and applied magnet…
Pressure-tuning of bond-directional exchange interactions and magnetic frustration in hyperhoneycomb iridate -
L. S. I. Veiga, M. Etter, K. Glazyrin +14
We explore the response of Ir orbitals to pressure in -, a hyperhoneycomb iridate in proximity to a Kitaev quantum spin liquid (QSL) ground state. X-ray…
Magnetic properties of GdZn (T = Fe, Co) investigated by X-ray diffraction and spectroscopy
J. R. L. Mardegan, G. Fabbris, L. S. I. Veiga +6
We investigate the magnetic and electronic properties of the GdZn ( = Fe and Co) compounds using X-ray resonant magnetic scattering (XRMS), X-ray absorption near-edg…
Physical properties and magnetic structure of the intermetallic CeCuBi2 compound
C. Adriano, P. F. S. Rosa, C. B. R. Jesus +10
In this work, we combined magnetization, pressure dependent electrical resistivity, heat-capacity, 63Cu Nuclear Magnetic Resonance (NMR) and X-ray resonant magnetic scattering expe…
Pressure induced amorphization and collapse of magnetic order in type-I clathrate Eu8Ga16Ge30
J. R. L. Mardegan, G. Fabbris, L. S. I. Veiga +4
We investigate the low temperature structural and electronic properties of the type-I clathrate Eu8Ga16Ge30 under pressure using x-ray powder diffraction (XRD), x-ray absorption ne…
Different routes to pressure-induced volume collapse transitions in gadolinium and terbium metals
G. Fabbris, T. Matsuoka, J. Lim +4
The sudden decrease in molar volume exhibited by most lanthanides under high pressure is often attributed to changes in the degree of localization of their 4f-electrons. We give ev…