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33 papers · 2 filters
Large magnetic circular dichroism in resonant inelastic x-ray scattering at the Mn L-edge of Mn-Zn ferrite
M. Magnuson, L. -C. Duda, S. M. Butorin +2
We report resonant inelastic x-ray scattering (RIXS) excited by circularly polarized x-rays on Mn-Zn ferrite at the Mn L2,3-resonances. We demonstrate that crystal field excitation…
Electronic structure investigation of Ti3AlC2, Ti3SiC2, and Ti3GeC2 by soft-X-ray emission spectroscopy
M. Magnuson, J. -P. Palmquist, M. Mattesini +9
The electronic structures of epitaxially grown films of Ti3AlC2, Ti3SiC2 and Ti3GeC2 have been investigated by bulk-sensitive soft X-ray emission spectroscopy. The measured high-re…
Electronic structure and chemical bonding in Ti4SiC3 investigated by soft x-ray emission spectroscopy and first principle theory
M. Magnuson, M. Mattesini, O. Wilhelmsson +7
The electronic structure in the new transition metal carbide Ti4SiC3 has been investigated by bulk-sensitive soft x-ray emission spectroscopy and compared to the well-studied Ti3Si…
Anisotropy in the electronic structure of V2GeC investigated by soft x-ray emission spectroscopy and first-principles theory
Martin Magnuson, Ola Wilhelmsson, Maurizio Mattesini +6
The anisotropy of the electronic structure of ternary nanolaminate V2GeC is investigated by bulk-sensitive soft x-ray emission spectroscopy. The measured polarization-dependent emi…
Resonant Auger spectroscopy at the L2,3 shake-up thresholds as a probe of electron correlation effects in nickel
M. Magnuson, N. Wassdahl, A. Nilsson +3
The excitation energy dependence of the three-hole satellites in the L3-M4,5M4,5 and L2-M4,5M4,5 Auger spectra of nickel metal has been measured using synchrotron radiation. The sa…
Electronic structure and chemical bonding in Ti2AlC investigated by soft x-ray emission spectroscopy
M. Magnuson, O. Wilhelmsson, J. -P. Palmquist +5
The electronic structure of the nanolaminated transition metal carbide Ti2AlC has been investigated by bulk-sensitive soft x-ray emission spectroscopy. The measured Ti L, C K and A…
Bonding mechanism in the nitrides Ti2AlN and TiN: an experimental and theoretical investigation
M. Magnuson, M. Mattesini, S. Li +4
The electronic structure of nanolaminate Ti2AlN and TiN thin films has been investigated by bulk-sensitive soft x-ray emission spectroscopy. The measured Ti L, N K, Al L1 and Al L2…
Structural and magnetic properties of Mn3-xCdxTeO6 (x = 0, 1, 1.5 and 2)
S. A. Ivanov, R. Mathieu, P. Nordblad +4
Mn3TeO6 exhibits a corundum-related A3TeO6 structure and a complex magnetic structure involving two magnetic orbits for the Mn atoms [*]. Mn3-xCdxTeO6 (x=0, 1, 1.5 and 2) ceramics…
Temperature-dependent multi-k magnetic structure in multiferroic Co3TeO6
S. A. Ivanov, R. Tellgren, C. Ritter +6
A complex magnetic order of the multiferroic compound Co3TeO6 has been revealed by neutron powder diffraction studies on ceramics and crushed single crystals. The compound adopts a…
Phonon spectrum, thermal expansion and heat capacity of UO from first-principles
Younsuk Yun, Dominik Legut, Peter M. Oppeneer
We report first-principles calculations of the phonon dispersion spectrum, thermal expansion, and heat capacity of uranium dioxide. The so-called direct method, based on the quasih…
Self-consistent supercell approach to alloys with local environment effects
Oleg E. Peil, Andrei V. Ruban, Börje Johansson
We present an efficient and accurate method for calculating electronic structure and related properties of random alloys with a proper treatment of local environment effects. The m…
Investigation of the magnetic phase transition and magnetocaloric properties of the MnFeSbO ilmenite
M. Hudl, R. Mathieu, P. Nordblad +3
The magnetic phase transition and magnetocaloric properties of mineral and synthetic melanostibite MnFeSbO with ilmenite-type structure have been studied. MnFeSbO o…
Possible high-temperature superconductors predicted from electronic structure and data-filtering algorithms
M. Klintenberg, O. Eriksson
We report here the completion of the electronic structure of the majority of the known stoichiometric inorganic compounds, as listed in the International Crystal Structure Data-bas…
A new thin film photochromic material: Oxygen-containing yttrium hydride
Trygve Mongstad, Charlotte Platzer-Björkman, Jan Petter Maehlen +6
In this work we report on photochromism in transparent thin film samples of oxygen-containing yttrium hydride. Exposure to visible and ultraviolet (UV) light at moderate intensity…
A route towards finding large magnetic anisotropy in nano-composites: application to a WRe/Fe multilayer
Sumanta Bhandary, Oscar Grånäs, Laszlo Szunyogh +3
We suggest here a novel nano-laminate, 5[Fe]/2[WRe] (x=0.6-0.8), with enhanced magnetic hardness in combination with a large saturation moment. The calculated magnetic…
Surface plasmons and magneto-optic activity in hexagonal Ni anti-dot arrays
Evangelos Th. Papaioannou, Vassilios Kapaklis, Emil Melander +7
The influence of surface plasmons on the magneto-optic activity in a two-dimensional hexagonal array is addressed. The experiments were performed using hexagonal array of circular…
Short-range spin order and frustrated magnetism in Mn2InSbO6 and Mn2ScSbO6
S. A. Ivanov, P. Nordblad, R. Mathieu +3
The complex metal oxides Mn2ASbO6 (A=In, Sc) with a corundum-related structure A3BO6 have been prepared as polycrystalline powders by a solid state reaction route. The crystal stru…
Atomic scale chemical fluctuation in LaSrVMoO6: A proposed halfmetallic antiferromagnet
Somnath Jana, Vijay Singh, S. D. Kaushik +7
Half metallic antiferromagnets (HMAFM) have been proposed theoretically long ago but have not been realized experimentally yet. Recently, a double perovskite compound, LaSrVMoO6, h…
Super-Diffusive Spin-Transport as a Mechanism of Ultrafast Demagnetization
Marco Battiato, Karel Carva, Peter M. Oppeneer
We propose a semi-classical model for femtosecond-laser induced demagnetization due to spin-polarized excited electron diffusion in the super-diffusive regime. Our approach treats…
The crystal and magnetic structure of the magnetocaloric compound FeMnP0.5Si0.5
Viktor Höglin, Matthias Hudl, Martin Sahlberg +3
The crystal and magnetic structure of the magnetocaloric compound FeMnP0.5Si0.5 have been studied by means of neutron and X-ray powder diffraction. Single phase samples of nominal…
New type of incommensurate magnetic ordering in Mn3TeO6
S. A. Ivanov, P. Nordblad, R. Mathieu +5
The complex metal oxide Mn3TeO6 exhibits a corundum related structure and has been prepared both in forms of single crystals by chemical transport reactions and of polycrystalline…
Disorder induced metallicity in amorphous graphene
E. Holmstrom, J. Fransson, O. Eriksson +3
We predict a transition to metallicity when a sufficient amount of disorder is induced in graphene. Calculations were performed by means of a first principles stochastic quench met…
Carbon release by selective alloying of transition metal carbides
Mikael Råsander, Erik Lewin, Ola Wilhelmsson +4
We have performed first principles density functional theory calculations on TiC alloyed on the Ti sublattice with 3d transition metals ranging from Sc to Zn. The theory is accompa…
Pseudogap behavior in PrSrMnO: A photoemission study
P. Pal, M. K. Dalai, I. Ulfat
The valence band electronic structure of PrSrMnO has been investigated across its paramagnetic metallic (PMM) - ferromagnetic metallic (FMM) - antiferromagnetic…