175 citations · 1k across the 29 of their papers we have counts for
29 papers
Emergence of interfacial magnetism in strongly-correlated nickelate-titanate superlattices
Teguh Citra Asmara, Robert J. Green, Andreas Suter +21
Strongly-correlated transition-metal oxides are widely known for their various exotic phenomena. This is exemplified by rare-earth nickelates such as LaNiO, which possess int…
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$_…
Gapped collective charge excitations and interlayer hopping in cuprate superconductors
M. Hepting, M. Bejas, A. Nag +17
We use resonant inelastic x-ray scattering (RIXS) to probe the propagation of plasmons in the electron-doped cuprate superconductor SrLaCuO (SLCO). We detect a…
Fate of charge order in overdoped La-based cuprates
K. von Arx, Qisi Wang, S. Mustafi +18
In high-temperature cuprate superconductors, stripe order refers broadly to a coupled spin and charge modulation with a commensuration of eight and four lattice units, respectively…
Fractional spin excitations in the infinite-layer cuprate CaCuO
Leonardo Martinelli, Davide Betto, Kurt Kummer +6
We use resonant inelastic x-ray scattering (RIXS) to investigate the magnetic dynamics of the infinite-layer cuprate CaCuO2. We find that close to the (1/2,0) point the single magn…
Multiple-magnon excitations shape the spin spectrum of cuprate parent compounds
Davide Betto, Roberto Fumagalli, Leonardo Martinelli +12
Thanks to high resolution and polarization analysis, resonant inelastic x-ray scattering (RIXS) magnetic spectra of La2CuO4, Sr2CuO2Cl2 and CaCuO2 reveal a rich set of properties o…
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…
Large polarons as key quasiparticles in SrTiO3 and SrTiO3-based heterostructures
Andrey Geondzhian, Alessia Sambri, Gabriella M. De Luca +11
Despite its simple structure and low degree of electronic correlation, SrTiO (STO) features collective phenomena linked to charge transport and, ultimately, superconductivity,…
Mobile orbitons in CaCuO: crucial role of the Hund's exchange
Roberto Fumagalli, Jonas Heverhagen, Davide Betto +9
We investigate the Cu edge resonant inelastic x-ray scattering (RIXS) spectra of a quasi-1D antiferromagnet CaCuO. In addition to the magnetic excitations, which are…
Crystalline and magnetic structure of Ba2CuO3+δ investigated by x-ray absorption spectroscopy and resonant inelastic x-ray scattering
Roberto Fumagalli, Abhishek Nag, Stefano Agrestini +8
Motivated by the recent synthesis of BaCuO (BCO), a high temperature superconducting cuprate with putative ground state symmetry, we investigated its ele…
Damping of spinful excitons in LaCoO by thermal fluctuations: Theory and experiment
Atsushi Hariki, Ru-Pan Wang, Andrii Sotnikov +7
We present Co -edge resonant inelastic x-ray scattering (RIXS) of bulk LaCoO across the thermally-induced spin-state crossover around 100~K. Owing to a high energy resolut…
Determining the Electron-Phonon Coupling in Superconducting Cuprates by Resonant Inelastic X-ray Scattering: Methods and Results on NdBaCuO
Lucio Braicovich, Matteo Rossi, Roberto Fumagalli +15
The coupling between lattice vibration quanta and valence electrons can induce charge density modulations and decisively influence the transport properties of materials, e.g. leadi…
Resonant inelastic x-ray scattering study of bond order and spin excitations in nickelate thin-film structures
K. Fürsich, Y. Lu, D. Betto +13
We used high-resolution resonant inelastic x-ray scattering (RIXS) at the Ni edge to simultaneously investigate high-energy interband transitions characteristic of Ni-O bond…
Experimental Determination of Momentum-Resolved Electron-Phonon Coupling
Matteo Rossi, Riccardo Arpaia, Roberto Fumagalli +9
We provide a novel experimental method to quantitatively estimate the electron-phonon coupling and its momentum dependence from resonant inelastic x-ray scattering (RIXS) spectra b…
Polarization resolved Cu -edge resonant inelastic x-ray scattering of orbital and spin excitations in NdBaCuO
R. Fumagalli, L. Braicovich, M. Minola +14
High resolution resonant inelastic x-ray scattering (RIXS) has proven particularly effective in the determination of crystal field and spin excitations in cuprates. Its strength li…
Magnetocrystalline anisotropy and exchange probed by high-field anomalous Hall effect in fully-compensated half-metallic Mn2RuxGa thin films
Ciarán Fowley, Karsten Rode, Yong-Chang Lau +12
Magnetotransport is investigated in thin films of the half-metallic ferrimagnet MnRuGa in pulsed magnetic fields of up to 58 T. A non-vanishing Hall signal is observed over…
Dynamical charge density fluctuations pervading the phase diagram of a Cu-based high-Tc superconductor
R. Arpaia, S. Caprara, R. Fumagalli +12
Charge density waves are a common occurrence in all families of high critical temperature superconducting cuprates. Although consistently observed in the underdoped region of the p…
Site-selective Probe of Magnetic Excitations in Rare-earth Nickelates using Resonant Inelastic X-ray Scattering
Y. Lu, D. Betto, K. Fürsich +11
We have used high-resolution resonant inelastic x-ray scattering (RIXS) to study a thin film of NdNiO, a compound whose unusual spin- and bond-ordered electronic ground state h…
Symmetry breaking at the (111) interfaces of SrTiO hosting a 2D-electron system
G. M. De Luca, R. Di Capua, E. Di Gennaro +7
We used x-ray absorption spectroscopy to study the orbital symmetry and the energy band splitting of (111) LaAlO/SrTiO and LaAlO/EuTiO/SrTiO heterostr…
Magneto-optic Kerr effect in a spin-polarized zero-moment ferrimagnet
Karsten Fleischer, Naganivetha Thiyagarajah, Yong-Chang Lau +6
The magneto-optical Kerr effect (MOKE) is often assumed to be proportional to the magnetisation of a magnetically ordered metallic sample; in metallic ferrimagnets with chemically…
Coupling between dynamic magnetic and charge-order correlations in the cuprate superconductor NdCeCuO
E. H. da Silva Neto, M. Minola, B. Yu +14
Charge order has now been observed in several cuprate high-temperature superconductors. We report a resonant inelastic x-ray scattering experiment on the electron-doped cuprate Nd$…
Depth-resolved resonant inelastic x-ray scattering at a superconductor/half-metallic ferromagnet interface through standing-wave excitation
Cheng-Tai Kuo, Shih-Chieh Lin, Giacomo Ghiringhelli +18
We demonstrate that combining standing-wave (SW) excitation with resonant inelastic x-ray scattering (RIXS) can lead to depth resolution and interface sensitivity for studying orbi…
Evolution of ground state wave function in CeCoIn upon Cd or Sn doping
K. Chen, F. Strigari, M. Sundermann +13
We present linear polarization-dependent soft x-ray absorption spectroscopy data at the Ce edges of Cd and Sn doped CeCoIn. The 4 ground state wave functions have…