Search Results - (Author, Cooperation:S. Cottenier)

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  1. 1
    K. Lejaeghere ; G. Bihlmayer ; T. Bjorkman ; P. Blaha ; S. Blugel ; V. Blum ; D. Caliste ; I. E. Castelli ; S. J. Clark ; A. Dal Corso ; S. de Gironcoli ; T. Deutsch ; J. K. Dewhurst ; I. Di Marco ; C. Draxl ; M. Dulak ; O. Eriksson ; J. A. Flores-Livas ; K. F. Garrity ; L. Genovese ; P. Giannozzi ; M. Giantomassi ; S. Goedecker ; X. Gonze ; O. Granas ; E. K. Gross ; A. Gulans ; F. Gygi ; D. R. Hamann ; P. J. Hasnip ; N. A. Holzwarth ; D. Iusan ; D. B. Jochym ; F. Jollet ; D. Jones ; G. Kresse ; K. Koepernik ; E. Kucukbenli ; Y. O. Kvashnin ; I. L. Locht ; S. Lubeck ; M. Marsman ; N. Marzari ; U. Nitzsche ; L. Nordstrom ; T. Ozaki ; L. Paulatto ; C. J. Pickard ; W. Poelmans ; M. I. Probert ; K. Refson ; M. Richter ; G. M. Rignanese ; S. Saha ; M. Scheffler ; M. Schlipf ; K. Schwarz ; S. Sharma ; F. Tavazza ; P. Thunstrom ; A. Tkatchenko ; M. Torrent ; D. Vanderbilt ; M. J. van Setten ; V. Van Speybroeck ; J. M. Wills ; J. R. Yates ; G. X. Zhang ; S. Cottenier
    American Association for the Advancement of Science (AAAS)
    Published 2016
    Staff View
    Publication Date:
    2016-03-26
    Publisher:
    American Association for the Advancement of Science (AAAS)
    Print ISSN:
    0036-8075
    Electronic ISSN:
    1095-9203
    Topics:
    Biology
    Chemistry and Pharmacology
    Computer Science
    Medicine
    Natural Sciences in General
    Physics
    Published by:
    http://www.aaas.org/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Rots, M. ; Demuynck, S. ; Cottenier, S. ; Dekoster, J. ; Meersschaut, J.

    [S.l.] : American Institute of Physics (AIP)
    Published 1999
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    Thin chromium films molecular beam epitaxy grown on partly relaxed MgO/Fe substrates held below T=150 °C are found either nonmagnetic below a chromium thickness around 5.0 nm or in a single-Q magnetic domain with the longitudinal (spins-out-of-plane) spin-density-wave (SDW) ordering stable up to 500 K. The longitudinal SDW-to-paramagnetic transition, the absence of the spin-flip transition and the actual character of the SDW depends on specific growth conditions. The present results reveal the spin-flip transition in chromium as an anisotropy effect rather than an intrinsic feature of the SDW ordering. © 1999 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.370037

    Articles: DFG German National Licenses
  3. 3
    Swinnen, B. ; Dekoster, J. ; Meersschaut, J. ; Demuynck, S. ; Cottenier, S. ; Langouche, G. ; Rots, M.

    [S.l.] : American Institute of Physics (AIP)
    Published 1997
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    By means of time differential perturbed angular correlation spectroscopy, we studied the 111Cd hyperfine fields in molecular beam epitaxy-grown Fe/Co multilayers on (1–10) GaAs as a function of temperature (90–570 K). Together with the known fields for Cd in bcc Fe and in bcc Co, we observed 4 sharply defined satellite fields. They have previously been associated with probe positions near a sharp Fe/Co interface. Whereas the Cd hyperfine field in Fe and its satellites decrease with temperature, the satellites on the Co field increase with temperature as the CdCo field does. We determine values for the near interface moments by using them as free parameters when fitting the experimental satellite fields within a semiempirical model for the hyperfine field. At all temperatures, the Fe and Co magnetic moments near the sharp interface between bcc Fe and the monoclinically deformed body centered Co oscillate as a function of the layer number over 2 layers in Co and 3 in Fe. The near interface magnetic moments temperature dependence scales to one of atoms in bulk Fe and Co, respectively: in the investigated temperature range, all Fe moments decrease as (1−A×T3/2) while the Co moments are temperature independent. © 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.364763

    Articles: DFG German National Licenses
  4. 4
    Swinnen, B. ; Dekoster, J. ; Meersschaut, J. ; Cottenier, S. ; Demuynck, S. ; Langouche, G. ; Rots, M.

    Woodbury, NY : American Institute of Physics (AIP)
    Published 1997
    Staff View
    ISSN:
    1077-3118
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The spatial dependence of the magnetic moment perturbation near the (1-10)-Fe/Co interface was derived from hyperfine fields determined by perturbed angular correlation. The amplitude of the moment perturbation decays exponentially with the distance to the interface. The moment perturbation itself is modulated by a sine function of the distance d to the interface Δμ=A*exp(−p*|d|)*sin(−k*d). Between 90 K and 570 K, we observe that the amplitude and the penetration depth of the perturbation as well as the wave vector of the modulation are essentially constant within the accuracy of the values. In this temperature region the average values for the parameters determining the exact moment perturbation are A=1.03μB, p=2.25×109 m and k=1.45×1010 m−1 when d is defined positive at the Co side of the interface.© 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1063/1.119144

    Articles: DFG German National Licenses
  5. 5
    Staff View
    ISSN:
    1434-6036
    Keywords:
    PACS. 75.40.-s Critical-point effects, specific heats, short-range order - 76.80.+y Mössbauer effect; other -ray spectroscopy - 71.27.+a Strongly correlated electron systems; heavy fermions
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Notes:
    Abstract: A scheme is presented in order to obtain complete information on atomic short range order in crystalline materials based on measuring the electric-field gradient on a probe nucleus. Limitations and possible improvements of the method are discussed. When applied to U(In0.5Sn0.5)3, short range order with In-Sn attraction is found.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s100510050624

    Articles: DFG German National Licenses
  6. 6
    Staff View
    ISSN:
    1572-9540
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1023/A:1012690709060

    Articles: DFG German National Licenses