English
Related papers

Related papers: Sigma-phase in the Fe-Re alloy system: experimenta…

200 papers

The electronic structure of Fe impurity in MgO was calculated by the linear muffin-tin orbital--full-potential method within the conventional local-density approximation (LDA) and making use of the LDA+$U$ formalism. The importance of…

Condensed Matter · Physics 2009-10-22 M. Korotin , A. Postnikov , T. Neumann , G. Borstel , V. Anisimov , M. Methfessel

Present work investigates the magnetic and electronic structure of MgO/Fe/MgO/Fe/Co/Au multilayer stack grown on Si(100) substrates by electron beam evaporation method. X-ray diffraction study depicts polycrystalline nature of the…

The electronic structure of the low-temperature (LT) monoclinic magnetite, Fe3O4, is investigated using the local spin density approximation (LSDA) and the LSDA+U method. The self-consistent charge ordered LSDA+U solution has a pronounced…

Strongly Correlated Electrons · Physics 2007-05-23 I. Leonov , A. N. Yaresko , V. N. Antonov , V. I. Anisimov

Grazing-incidence X-ray diffraction data are combined with energy-minimization calculations to analyse the atomic structure of the Al-rich (3sqrt{3} x 3sqrt{3})R 30 deg reconstructed surface of sapphire alpha-Al_2O_3(0001). The experiments…

Materials Science · Physics 2009-11-07 Igor Vilfan , Thierry Deutsch , Frederic Lancon , Gilles Renaud

The low-energy electronic structure, including the Fermi surface topology, of the itinerant metamagnet Sr$_{4}$Ru$_{3}$O$_{10}$ is investigated for the first time by synchrotron-based angle-resolved photoemission. Well-defined quasiparticle…

Multiconfiguration Dirac-Fock and Relativistic Configuration Interaction methods have been employed to predict the structure and the width of $K\alpha_{1,2}$ x-ray lines of Al and Si. The influences of electron correlation and inclusion of…

Atomic Physics · Physics 2015-06-22 Karol Kozioł

Experimental evidence both for and against a half-metallic ground-state of the Heusler compound Co2FeSi has been published. Density functional theory based calculations suggest a non half-metallic ground state. It has been argued, that…

Based on a localized crystal electric field model for the U^{4+} in the (5f)^2-configuration, we analyze the resonant x-ray scattering spectra around U M_{IV} and M_{V} edges in URu_{2}Si_{2}, taking full Coulomb and spin-orbit interactions…

Strongly Correlated Electrons · Physics 2009-11-10 Tatsuya Nagao , Jun-ichi Igarashi

We study the growth and properties of quaternary-alloy ferromagnetic semiconductor (FMS) (In0.94-x,Gax,Fe0.06)Sb (x = 5% - 30%, Fe concentration is fixed at 6%) grown by low temperature molecular beam epitaxy (LT-MBE).Reflection high-energy…

Materials Science · Physics 2024-06-12 Tomoki Hotta , Kengo Takase , Kosuke Takiguchi , Karumuri Sriharsha , Le Duc Anh , Masaaki Tanaka

We study the low energy states of the Kondo alloy model (KAM) as function of the magnetic impurity concentration per site, x, and the conduction electron average site occupation, nc. In previous works, two different Fermi liquid regimes had…

Strongly Correlated Electrons · Physics 2019-09-04 Sébastien Burdin , Claudine Lacroix

Sigma-phase Fe65.9V34.1 alloy was investigated with the M\"ossbauer spectroscopy. M\"ossbauer spectra were recorded in the temperature interval of 80-300 K. Their analysis in terms of the hyperfine distribution protocol yielded the average…

Strongly Correlated Electrons · Physics 2016-01-05 J. Żukrowski , S. M. Dubiel

Metallic surface states on semiconducting substrates provide an opportunity to study low-dimensional electrons decoupled from the bulk. Angle resolved photoemission is used to determine the Fermi surface, group velocity, and effective mass…

Condensed Matter · Physics 2009-11-07 J. N. Crain , K. N. Altmann , Ch. Bromberger , F. J. Himpsel

The electronic structures of the Heusler type compounds Fe$_{3-x}V$_x$Si in the concentration range between x = 0 and x = 1 have been probed by photoemission spectroscopy (PES). The observed shift of Si 2p core- level and the main valence…

Anisotropic Fe K-edge and As K-edge X-ray absorption near edge spectrum (XANES) measurements on superconducting (T_c = 52 K) (Sm_{0.95}La_{0.05})FeAs(O_{0.85}F_{0.15}) field-aligned microcrystalline powder are presented. The angular…

Superconductivity · Physics 2009-10-06 B. C. Chang , Y. B. You , T. J. Shiu , M. F. Tai , H. C. Ku , Y. Y. Hsu , L. Y. Jang , J. F. Lee , Z. Wei , K. Q. Ruan , X. G. Li

Using density functional theory (DFT) methods, we have calculated X-ray absorption spectroscopy (XAS) and X-ray circular dichroism (XMCD) spectra in bulk and thin films of Fe$_3$GeTe$_2$, CrI$_3$, and CrGeTe$_3$. DFT+$U$ methods are…

Materials Science · Physics 2021-04-14 Y. Lee , V. N. Antonov , B. N. Harmon , Liqin Ke

We have investigated electronic energy band structures and partial density of states of intermetallic compounds $\textit{viz.}$ CrSi, MnSi, FeSi and CoSi, by using density functional theory (DFT). CrSi \& MnSi, FeSi and CoSi have metallic,…

Strongly Correlated Electrons · Physics 2018-08-22 Paromita Dutta , Sudhir K. Pandey

The organic metal \theta$-(BETS)$_4$HgBr$_4$(C$_6$H$_5$Cl) is known to undergo a phase transition as the temperature is lowered down to about 240 K. X-ray data obtained at 200 K indicate a corresponding modification of the crystal…

The Debye temperature, T_D, of sigma-phase Fe_(100-x)Mo_x compounds with 47 < x < 56.7 was determined from the temperature dependence of the centre shift of M\"ossbauer spectra recorded in the temperature range of 80 - 300 K. Its…

Materials Science · Physics 2013-07-05 J. Cieslak , S. M. Dubiel

For a material that is a half-metal, there should exist a range of compositions for half-metallicity. This compositional range can be expressed in terms of electron count and computed. We investigate electronic and magnetic properties of…

Materials Science · Physics 2023-06-22 Nikolai A. Zarkevich , Prashant Singh , A. V. Smirnov , Duane D. Johnson

The intermetallic $\tau_{11}$ Al$_4$Fe$_{1.7}$Si phase is of interest for high-temperature structural application due to its combination of low density and high strength. We determine the crystal structure of the $\tau_{11}$ phase through a…

‹ Prev 1 3 4 5 6 7 10 Next ›