1.1k citations · 6k across the 83 of their papers we have counts for
33 papers · 1 filter
Anisotropic hybridization probed by polarization dependent x-ray absorption spectroscopy in VI3 van der Waals Mott ferromagnet
R. Sant, A. De Vita, V. Polewczyk +6
Polarization dependent x-ray absorption spectroscopy was used to study the magnetic ground state and the orbital occupation in bulk-phase VI van der Waals crystals below and ab…
Collective nature of orbital excitations in layered cuprates in the absence of apical oxygens
Leonardo Martinelli, Krzysztof Wohlfeld, Jonathan Pelliciari +19
We have investigated the 3d orbital excitations in CaCuO2 (CCO), Nd2CuO4 (NCO), and La2CuO4 (LCO) using high-resolution resonant inelastic x-ray scattering. In LCO they behave as w…
Investigation of metamagnetism and crystal-field splitting in pseudo-hexagonal CeRhSi
Andrea Amorese, Dmitry Khalyavin, Kurt Kummer +11
CeRhSi has been reported to exhibit metamagnetic transitions below 5~K, a giant crystal field splitting, and anisotropic magnetic properties from single crystal magnetizati…
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…
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,…
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…
Spin-orbit coupling and crystal-field distortions for a low-spin state in BaCoO
Y. Y. Chin, Z. Hu, H. -J. Lin +13
We have studied the electronic structure of BaCoO using soft x-ray absorption spectroscopy at the Co- and O- edges, magnetic circular dichroism at the Co-…
A RIXS investigation of the crystal-field splitting of Sm in SmB
Andrea Amorese, Oliver Stockert, Kurt Kummer +7
The crystal-field (CF) splitting of the Hund's rule ground state of Sm in the strongly correlated topological insulator SmB has been determined with high res…
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…
High-resolution resonant inelastic soft X-ray scattering as a probe of the crystal electrical field in lanthanides demonstrated for the case of CeRh2Si2
A. Amorese, N. Caroca-Canales, S. Seiro +6
The magnetic properties of rare earth compounds are usually well captured by assuming a fully localized f shell and only considering the Hund's rule ground state multiplet split by…
Dispersive charge density wave excitations and temperature dependent commensuration in Bi2Sr2CaCu2O8+δ
Laura Chaix, Giacomo Ghiringhelli, Yingying Peng +14
Experimental evidence on high-Tc cuprates reveals ubiquitous charge density wave (CDW) modulations, which coexist with superconductivity. Although the CDW had been predicted by the…
Similar temperature scale for valence changes in Kondo lattices with different Kondo temperatures
K. Kummer, C. Geibel, C. Krellner +4
The Kondo model predicts that both the valence at low temperatures and its temperature dependence scale with the characteristic energy T_K of the Kondo interaction. Here, we study…
Crystal field splitting in SrIrO ( = 1, 2) iridates probed by x-ray Raman spectroscopy
M. Moretti Sala, M. Rossi, A. Al-Zein +9
Non-resonant Raman spectroscopy in the hard X-ray regime has been used to explore the electronic structure of the first two members of the Ruddlesden-Popper series SrIr…
Orbital occupancies and the putative jeff = 1/2 groundstate in Ba2IrO4: a combined oxygen K edge XAS and RIXS study
M. Moretti Sala, M. Rossi, S. Boseggia +9
The nature of the electronic groundstate of Ba2IrO4 has been addressed using soft X-ray absorption and inelastic scattering techniques in the vicinity of the oxygen K edge. From th…
Correlation between the phase diagram and the crystal-field wave functions of CeRh(1-x)Ir(x)In5
T. Willers, F. Strigari, Z. Hu +9
The 4f crystal-electric field ground state wave functions of CeRh(1-x)Ir(x)In5 have been determined by linear polarization dependent soft x-ray absorption spectroscopy (XAS) at T =…
Spectroscopic evidence for giant orbital moment and magnetic anisotropy induced by local distortions in alpha-CoV2O6
N. Hollmann, S. Agrestini, Z. Hu +9
We present a combined experimental and theoretical study on the local magnetism of the Co ions in the spin-chain compound CoV2O6, which crystallizes in two different allotropic pha…
Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures
M. Salluzzo, S. Gariglio, D. Stornaiuolo +11
Possible ferromagnetism induced in otherwise non-magnetic materials has been motivating intense research in complex oxide heterostructures. Here we show that a confined magnetism i…
Long-range incommensurate charge fluctuations in (Y,Nd)Ba2Cu3O(6+x)
G. Ghiringhelli, M. Le Tacon, M. Minola +17
There are increasing indications that superconductivity competes with other orders in cuprate superconductors, but obtaining direct evidence with bulk-sensitive probes is challengi…
BaVS probed by V L edge X-ray absorption spectroscopy
V. Ilakovac, N. B. Brookes, J. Criginski Cezar +10
Polarization dependent vanadium L edge X-ray absorption spectra of BaVS single crystals are measured in the four phases of the compound. The difference between signals with the…
Hole-depletion of ladders in SrCuO induced by correlation effects
V. Ilakovac, C. Gougoussis, M. Calandra +7
The hole distribution in SrCuO is studied by low temperature polarization dependent O K Near-Edge X-ray Absorption Fine Structure measurements and state of the…
Orbital order in La0.5Sr1.5MnO4: beyond a common local Jahn-Teller picture
Hua Wu, C. F. Chang, O. Schumann +9
The standard way to find the orbital occupation of Jahn-Teller (JT) ions is to use structural data, with the assumption of a one-to-one correspondence between the orbital occupatio…
Orbital occupation and magnetic moments of tetrahedrally coordinated iron in CaBaFe4O7
N. Hollmann, Z. Hu, Hua Wu +8
CaBaFe4O7 is a mixed-valent transition metal oxide having both Fe2+ and Fe3+ ions in tetrahedral coordination. Here we characterize its magnetic properties by magnetization measure…
Multiple double-exchange mechanism by Mn-doping in manganite compounds
P. Orgiani, A. Galdi, C. Aruta +9
Double-exchange mechanisms in REAEMnO manganites (where RE is a trivalent rare-earth ion and AE is a divalent alkali-earth ion) relies on the strong exchange in…
Evolution of magnetic phases and orbital occupation in (SrMnO3)n/(LaMnO3)2n superlattices
C. Aruta, C. Adamo, A. Galdi +11
The magnetic and electronic modifications induced at the interfaces in (SrMnO)/(LaMnO) superlattices have been investigated by linear and circular magnetic…