Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Spanjaard, Daniël"'
Autor:
Li, Dongzhe, Smogunov, Alexander, Barreteau, Cyrille, Ducastelle, Francois, Spanjaard, Daniel
We report tight-binding (TB) calculations of magnetocrystalline anisotropy energy (MAE) of Iron slabs and nanoclusters with a particuler focus on local analysis. After clarifying various concepts and formulations for the determination of MAE, we appl
Externí odkaz:
http://arxiv.org/abs/1309.4578
Autor:
Autes, Gabriel, Barreteau, Cyrille, Desjonquères, Marie-Catherine, Spanjaard, Daniel, Viret, Michel
We study here, both experimentally and theoretically, the anisotropy of magnetoresistance in atomic contacts. Our measurements on iron break junctions reveal an abrupt and hysteretic switch between two conductance levels when a large applied field is
Externí odkaz:
http://arxiv.org/abs/0802.1595
We present a theoretical study of spin polarized transport in Fe atomic contacts using a self-consistent tight-binding Hamiltonian in a non-orthogonal $s$, $p$ and $d$ basis set, the spin-polarization being obtained from a non-collinear Stoner-like m
Externí odkaz:
http://arxiv.org/abs/0802.1598
Publikováno v:
Physical Review B 76 (2007) 024412
The orbital contribution to the magnetic properties of Fe in systems of decreasing dimensionality (bulk, surfaces, wire and free clusters) is investigated using a tight-binding hamiltonian in an $s, p,$ and $d$ atomic orbital basis set including spin
Externí odkaz:
http://arxiv.org/abs/cond-mat/0703576
We show that considerable orbital magnetic moments and magneto-crystalline anisotropy energies are obtained for a Fe monatomic wire described in a tight-binding method with intra-atomic electronic interactions treated in a full Hartree Fock (HF) deco
Externí odkaz:
http://arxiv.org/abs/cond-mat/0607047
Publikováno v:
Journal of Physics Condensed Matter 18 (2006) 6785
The magnetic properties of iron (spin and orbital magnetic moments, magnetocrystalline anisotropy energy) in various geometries and dimensionalities are investigated by using a parametrized tight-binding model in an $s$, $p$ and $d$ atomic orbital ba
Externí odkaz:
http://arxiv.org/abs/cond-mat/0603121
The surface diffusion of Cu adatoms in the presence of an adisland at FCC or HCP sites on Cu(111) is studied using the EAM potential derived by Mishin {\it et al.} [Phys. Rev. B {\bf 63} 224106 (2001)]. The diffusion rates along straight (with close-
Externí odkaz:
http://arxiv.org/abs/cond-mat/0412468
Publikováno v:
Journal of Physics: Condensed Matter 15 (2003) S3171
The energetics of transition and noble metal (Rh, Pd, Cu) vicinal surfaces, i.e., surface energy, step energy, kink energy and electronic interactions between steps, is studied at 0K from electronic structure calculations in the tight-binding approxi
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406637
Publikováno v:
Physical Review B 69 (2004) 064432
We reanalyze the condition for metallic ferromagnetism in the framework of the tight-binding approximation and investigate the consequences of the inter-site Coulomb interactions using the Hartree-Fock approximation. We first consider a non-degenerat
Externí odkaz:
http://arxiv.org/abs/cond-mat/0406395
Publikováno v:
In Comptes rendus - Physique March-April 2016 17(3-4):406-429
