Search Results - "Haverkort, M W"
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Theory of resonant inelastic x-ray scattering by collective magnetic excitations
Published in Physical review letters (15-10-2010)“…I present a tractable theory for the resonant inelastic x-ray scattering (RIXS) of magnons. The low-energy transition operator is written as a product of local…”
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Ab initio calculation of the electron capture spectrum of 163Ho: Auger-Meitner decay into continuum states
Published in New journal of physics (01-09-2020)“…Determining the electron neutrino mass by electron capture in 163Ho relies on an accurate understanding of the differential electron capture nuclear decay rate…”
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3
Photoelectron spin-polarization control in the topological insulator Bi2Se3
Published in Physical review letters (20-02-2014)“…We study the manipulation of the spin polarization of photoemitted electrons in Bi2Se3 by spin- and angle-resolved photoemission spectroscopy. General rules…”
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Crossover from Collective to Incoherent Spin Excitations in Superconducting Cuprates Probed by Detuned Resonant Inelastic X-Ray Scattering
Published in Physical review letters (31-08-2017)“…Spin excitations in the overdoped high temperature superconductors Tl_{2}Ba_{2}CuO_{6+δ} and (Bi,Pb)_{2}(Sr,La)_{2}CuO_{6+δ} were investigated by resonant…”
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Spin–orbital separation in the quasi-one-dimensional Mott insulator Sr2CuO3
Published in Nature (London) (03-05-2012)“…The splitting of the electron into distinct quasi-particles separately carrying the elementary particles’ spin and orbital angular momentum is observed in a…”
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Bands, resonances, edge singularities and excitons in core level spectroscopy investigated within the dynamical mean-field theory
Published in Europhysics letters (01-12-2014)“…Using a recently developed impurity solver we exemplify how dynamical mean-field theory captures band excitations, resonances, edge singularities and excitons…”
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Many-Body Physics of Single and Double Spin-Flip Excitations in NiO
Published in Physical review letters (14-02-2020)“…Understanding many-body physics of elementary excitations has advanced our control over material properties. Here, we study spin-flip excitations in NiO using…”
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Site-Selective Probe of Magnetic Excitations in Rare-Earth Nickelates Using Resonant Inelastic X-ray Scattering
Published in Physical review. X (01-07-2018)“…We use high-resolution resonant inelastic x-ray scattering (RIXS) to study a thin film ofNdNiO3, a compound whose unusual spin- and bond-ordered electronic…”
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9
Detection of metastable electronic states by Penning trap mass spectrometry
Published in Nature (London) (01-05-2020)“…State-of-the-art optical clocks 1 achieve precisions of 10 −18 or better using ensembles of atoms in optical lattices 2 , 3 or individual ions in…”
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10
Orbital control of noncollinear magnetic order in nickel oxide heterostructures
Published in Physical review letters (05-09-2013)“…We have used resonant x-ray diffraction to develop a detailed description of antiferromagnetic ordering in epitaxial superlattices based on two-unit-cell thick…”
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Controlling orbital moment and spin orientation in CoO layers by strain
Published in Physical review letters (28-10-2005)“…We have observed that CoO films grown on different substrates show dramatic differences in their magnetic properties. Using polarization dependent x-ray…”
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12
Noncollinear Ordering of the Orbital Magnetic Moments in Magnetite
Published in Physical review letters (15-11-2019)“…The magnitude of the orbital magnetic moment and its role as a trigger of the Verwey transition in the prototypical Mott insulator, magnetite, remain…”
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The quartet ground state in CeB6: An inelastic x-ray scattering study
Published in Europhysics letters (01-01-2017)“…We investigated the ground-state symmetry of the cubic hidden order compound CeB6 by means of core level non-resonant inelastic x-ray scattering (NIXS). The…”
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14
Maximal Rashba-like spin splitting via kinetic-energy-coupled inversion-symmetry breaking
Published in Nature (London) (28-09-2017)“…Asymmetry in surface hopping energies in different atomic layers of delafossite oxides results in some of the largest known Rashba-like spin splittings. Top…”
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Nature of magnetism in Ca3Co2O6
Published in Physical review letters (28-10-2005)“…We find using local spin density approximation + Hubbard U band structure calculations that the novel one-dimensional cobaltate Ca3Co2O6 is not a ferromagnetic…”
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Nonresonant inelastic x-ray scattering involving excitonic excitations: the examples of NiO and CoO
Published in Physical review letters (21-12-2007)“…In a recent publication Larson et al. reported remarkably clear d-d excitations for NiO and CoO with x-ray scattering. Here we present an accurate quantitative…”
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17
Dynamical Effects in Resonant X-Ray Diffraction
Published in Physical review letters (09-09-2016)“…Using resonant magnetic diffraction at the Ni L_{2,3} edge in a LaNiO_{3} superlattice, we show that dynamical effects beyond the standard kinematic…”
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Selective Orbital Imaging of Excited States with X-Ray Spectroscopy: The Example of α -MnS
Published in Physical review. X (01-01-2021)“…Herein we show that nonresonant inelastic x-ray scattering involving anscore level is a powerful spectroscopic method to characterize the excited states of…”
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19
Orbital-assisted metal-insulator transition in VO2
Published in Physical review letters (04-11-2005)“…We found direct experimental evidence for an orbital switching in the V 3d states across the metal-insulator transition in VO2. We have used soft-x-ray…”
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20
Two-spinon and orbital excitations of the spin-Peierls system TiOCl
Published in Physical review letters (01-09-2011)“…We combine high-resolution resonant inelastic x-ray scattering with cluster calculations utilizing a recently derived effective magnetic scattering operator to…”
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