Zobrazeno 1 - 10
of 1 580
pro vyhledávání: '"Zeller R"'
Publikováno v:
Appl. Phys. A 82, 103-107 (2006).
We present ab-initio calculations of the electronic structure of small Fe clusters (1-9 atoms) on Ni(001), Ni(111), Cu(001) and Cu(111) surfaces. Emphasis is given on the spin moments, and their dependence on cluster size and shape. We derive a simpl
Externí odkaz:
http://arxiv.org/abs/cond-mat/0411644
In this paper we examine the electronic and geometrical structure of impurity-vacancy complexes in Si and Ge. Already Watkins suggested that in Si the pairing of Sn with the vacancy produces a complex with the Sn-atom at the bond center and the vacan
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406678
The electrical field gradient (EFG), measured e.g. in perturbed angular correlation (PAC) experiments, gives particularly useful information about the interaction of probe atoms like 111In / 111Cd with other defects. The interpretation of the EFG is,
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406616
Publikováno v:
Phys. Rev. B 69, 054424 (2004)
The spin-orbit interaction can cause a nonvanishing density of states (DOS) within the minority-spin band gap of half-metals around the Fermi level. We examine the magnitude of the effect in Heusler alloys, zinc-blende half metals and diluted magneti
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308146
Publikováno v:
J. Phys.: Condens. Matter 16 No 26 (7 July 2004) 4643-4659
We present first-principles calculations of ballistic spin injection in Fe/GaAs and Fe/ZnSe junctions with orientation (001), (111), and (110). We find that the symmetry mismatch of the Fe minority-spin states with the semiconductor conduction states
Externí odkaz:
http://arxiv.org/abs/cond-mat/0308138
Publikováno v:
Phys. Rev. B 65, R241306 (2002)
We consider the spin injection from Fe into ZnSe and GaAs in the ballistic limit. By means of the ab initio SKKR method we calculate the ground state properties of epitaxial Fe|ZnSe(001) and Fe|GaAs(001) heterostructures. Three injection processes ar
Externí odkaz:
http://arxiv.org/abs/cond-mat/0201280
Autor:
Galanakis, I., Bihlmayer, G., Bellini, V., Papanikolaou, N., Zeller, R., Bluegel, S., Dederichs, P. H.
Publikováno v:
Europhysics Letters Vol. 58, 751 (2002)
Using two different full-potential ab-initio techniques we introduce a simple, universal rule based on the number of broken first-neighbor bonds to determine the surface energies of the three noble metals Cu, Ag and Au. When a bond is broken, the rea
Externí odkaz:
http://arxiv.org/abs/cond-mat/0105207
Autor:
Gambardella, P., Rusponi, S., Veronese, M., Dhesi, S. S., Grazioli, C., Dallmeyer, A., Cabria, I., Zeller, R., Dederichs, P. H., Kern, K., Carbone, C., Brune, H.
Publikováno v:
Science, 2003 May . 300(5622), 1130-1133.
Externí odkaz:
https://www.jstor.org/stable/3834034
Publikováno v:
Phys. Rev. B 54 (1996) 4531
It is shown that the Brillouin zone integral for the interstitial KKR-Green function can be evaluated accurately by taking proper care of the free-electron singularities in the integrand. The proposed method combines two recently developed methods, a
Externí odkaz:
http://arxiv.org/abs/cond-mat/9609052
Autor:
Iorio, C., Koucheki, R., Strantzas, S., Vandenberk, M., Lewis, S.J., Zeller, R., Camp, M., Rocos, B., Tundo, F., Lebel, D.E.
Publikováno v:
In Brain and Spine 2023 3 Supplement 2