365 citations · 819 across the 24 of their papers we have counts for
24 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…
Strain control of a bandwidth-driven spin reorientation in CaRuO
C. D. Dashwood, A. H. Walker, M. P. Kwasigroch +14
The layered-ruthenate family of materials possess an intricate interplay of structural, electronic and magnetic degrees of freedom that yields a plethora of delicately balanced gro…
Robust Kagome Electronic Structure in Topological Quantum Magnets XMn6Sn6 (X = Dy, Tb, Gd, Y)
X. Gu, C. Chen, W. S. Wei +24
Crystal geometry can greatly influence the emergent properties of quantum materials. As an example, the kagome lattice is an ideal platform to study the rich interplay between topo…
Probing electron-phonon interactions away from the Fermi level with resonant inelastic x-ray scattering
C. D. Dashwood, A. Geondzhian, J. G. Vale +16
Interactions between electrons and lattice vibrations are responsible for a wide range of material properties and applications. Recently, there has been considerable interest in th…
Readout of a antiferromagnetic spintronics systems by strong exchange coupling of Mn2Au and Permalloy
S. P. Bommanaboyena, D. Backes, L. S. I. Veiga +14
In antiferromagnetic spintronics, the read-out of the staggered magnetization or Neel vector is the key obstacle to harnessing the ultra-fast dynamics and stability of antiferromag…
Correlated electron metal properties of the honeycomb ruthenate NaRuO
L. S. I. Veiga, M. Etter, E. Cappelli +7
We report the synthesis and characterisation of polycrystalline NaRuO, a layered material in which the Ru ( configuration) form a honeycomb lattice. The optima…
Colossal magnetoresistance in a nonsymmorphic antiferromagnetic insulator
P. F. S. Rosa, Yuanfeng Xu, S. K. Kushwaha +14
Here we investigate antiferromagnetic EuInSb, a nonsymmorphic Zintl phase. Our electrical transport data show that EuInSb is remarkably insulati…
Spontaneous cycloidal order mediating a spin-reorientation transition in a polar metal
C. D. Dashwood, L. S. I. Veiga, Q. Faure +9
We show how complex modulated order can spontaneously emerge when magnetic interactions compete in a metal with polar lattice distortions. Combining neutron and resonant x-ray scat…
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…
High-resolution resonant inelastic x-ray scattering study of the electron-phonon coupling in honeycomb -LiIrO
J. G. Vale, C. D. Dashwood, E. Paris +11
The excitations in honeycomb -LiIrO have been investigated with high-resolution resonant inelastic x-ray scattering (RIXS) at the O K edge. The low-energy response is do…
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…
Selective probing of magnetic order on Tb and Ir sites in stuffed TbIrO using resonant X-ray scattering
C. Donnerer, M. C. Rahn, E. Schierle +7
We study the magnetic structure of the "stuffed" (Tb-rich) pyrochlore iridate TbIrO, using resonant elastic x-ray scattering (REXS). In order to disentangle…
Pressure-induced structural dimerization in the hyperhoneycomb iridate -LiIrO at low temperatures
L. S. I. Veiga, K. Glazyrin, G. Fabbris +10
A pressure-induced collapse of magnetic ordering in -LiIrO at GPa has previously been interpreted as evidence for possible emergence of spin liquid state…
Tuning of the Ru ground-state orbital population in the Mott insulator CaRuO achieved by La doping
D. Pincini, L. S. I. Veiga, C. D. Dashwood +6
The ground-state orbital occupancy of the Ru ion in CaLaRuO [x=0, 0.05(1), 0.07(1) and 0.12(1)] was investigated by performing X-ray absorption spectroscopy…
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…
Probing 5f electronic hybridization in Uranium compounds via x-ray magnetic circular dichroism
R. D. dos Reis, L. S. I. Veiga, D. Haskel +4
We study the spin-dependent electronic structure of UTe and UT_{2}Si_{2} (T=Cu and Mn) compounds with a combination of x-ray magnetic circular dichroism measurements and first prin…
Pressure-induced collapsed-tetragonal phase in SrCo2As2
W. T. Jayasekara, U. S. Kaluarachchi, B. G. Ueland +16
We present high-energy x-ray diffraction data under applied pressures up to p = 29 GPa, neutron diffraction measurements up to p = 1.1 GPa, and electrical resistance measurements u…
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…
Two-Level Rectilinear Steiner Trees
Stephan Held, Nicolas Kämmerling
Given a set of terminals in the plane and a partition of into subsets , a two-level rectilinear Steiner tree consists of a rectilinear Steiner tree …
Electronic and structural ground state of heavy alkali metals at high pressure
G. Fabbris, J. Lim, L. S. I. Veiga +2
Alkali metals display unexpected properties at high pressure, including emergence of low symmetry crystal structures, that appear to occur due to enhanced electronic correlations a…
Hyper-honeycomb iridate -Li2IrO3 as a platform for Kitaev magnetism
T. Takayama, A. Kato, R. Dinnebier +2
The realization of Kitaev spin liquid, where spins on a honeycomb lattice are coupled ferromagnetically by bond-dependent anisotropic interactions, has been a sought-after dream. 5…
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…