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  • 1
    Electronic Resource
    Electronic Resource
    Growth and magnetism of one Mn monolayer on Ag(100) : The 7th joint MMM-intermag conference on magnetism and magnetic materials (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 7013-7015 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Structural properties of Mn films, with a thickness of one monolayer (ML), deposited on a Ag(100) substrate have been investigated both experimentally (photoemission and ion scattering spectroscopies) and theoretically (tight-binding linear muffin-tin orbital method). The magnetic structure of the films and the effect of magnetism on their relative stability have been investigated ab initio. We find that after Mn evaporation [at room temperature (RT)], a superficial MnAg alloy is formed. Mild annealing gives rise to the formation of an (almost) inverted Mn monolayer covered by a Ag plane, i.e., the second atomic plane of the sample is mainly constituted by Mn atoms, whereas the first atomic layer is almost a pure Ag plane. A complete inversion of the Mn ML can be obtained by direct sequential deposition of Mn and Ag at 80 K. Our calculations on the energetic stability of 1 ML of Mn on top of Ag(100) versus 1 ML of Mn covered by one Ag atomic plane, show that the second situation is energetically preferred. This is also true when this situation is compared to the formation of a 2-ML-thick MnAg alloy on Ag(100). We find that the inverted Mn monolayer tends to be ferromagnetic and that magnetism acts against interdiffusion. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367651
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  • 2
    Electronic Resource
    Electronic Resource
    Photoemission theory of mixed valent semiconductors (1985)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 57 (1985), S. 3191-3193 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: By using the Anderson model with a filled valence band (VB) we first give a formal description of the core hole photoemission, the direct f-electron photoemission, and the resonant photoemission. Then we apply our formalism to a CeO2-type semiconductor and we calculate the core photoemission spectra: taking account for a strong final state interaction we discuss our results in terms of (i) the relative positions of the final f states with respect to the VB states, (ii) the hybridization between those two types of states, and (iii) the Coulombic Uff interaction energy.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.335146
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  • 3
    Electronic Resource
    Electronic Resource
    Low-temperature properties of the Ce(Pd $\mathsf{_{1-x}}$ Ni $\mathsf{_{x})_{3}}$ system (2003)
    Springer
    The European physical journal 37 (2003), S. 163-167 
    Details
    ISSN: 1434-6036
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract. The influence of substituting Pd by Ni is described in Ce(Pd1-x Ni x )3 alloys with x taken up to about 0.25. Thermal and magnetization measurements point out a transition from a non-magnetic state (CePd3) to a ferromagnetic state for x 〉 0.05, with a Curie temperature $T_{c}\approx2$ K. The Ce-L 2,3 absorption edges and magnetic circular dichroism (XMCD) study reveals the coexistence of strong 4f hybridization and ferromagnetic order. The Ce-L 2,3 XMCD signal measured in CePd3 demonstrates that in the Ce-based dense Kondo materials only the 4f 1 channel gives a magnetic response.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1140/epjb/e2004-00042-0
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  • 4
    Electronic Resource
    Electronic Resource
    Electronic and magnetic properties of dilute transition clusters in noble (or transition) metals (1975)
    Springer
    Journal of low temperature physics 19 (1975), S. 317-339 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Using a realistic band structure for the host (noble or transition metal), we present a detailed study of the electronic and magnetic properties of transitional impurity clusters without interactions between the clusters. For the calculation of the one-electron properties, the Hartree-Fock environment effects are self-consistently taken into account by Friedel's rule. The impurity potentials and densities of states are very sensitive to the impurity-impurity interactions inside the clusters. For the calculation of the magnetic properties, the electron-electron interactions are taken into account in the random phase approximation, which allows one to obtain simple expressions for the specific heat and the low-temperature-dependent resistivity. These properties are expressed in terms of three characteristic temperatures T f(1), T f(2) + , and T f(2) − corresponding to three different modes of spin fluctuations for the considered model. We present numerical results from the study of the local magnetic susceptibility, which depends on local environments via several combined effects. Our conclusions on “nearly magnetic” copper-based alloys are in good agreement with the experimental data. In particular, our calculations confirm that a magnetic moment appears on a nickel atom when it is surrounded by approximately eight nearest-neighboring Ni atoms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00116183
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