2002/04/03 by I. Galanakis, I Galanakis · 1 citation
Chemistry · Materials Science · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Character (mathematics) #Chemical and Physical Properties of Materials #Fermi Gamma-ray Space Telescope #Fermi level #Fermi surface #Heusler alloys: electronic and magnetic properties #Surface (topology) #Surface structure #cond-mat
paper · pdf · doi:10.1088/0953-8984/14/25/303
published as Journal of Physics: Condensed Matter 14, 6329 (2002). · 14 pages, 6 figures
arxiv created 2002/04/03 · openalex publication_date 2002/06/13 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Using a full-potential ab initio technique I study the electronic and magnetic properties of the (001) surfaces of the half-Heusler alloys NiMnSb, CoMnSb and PtMnSb and of the full-Heusler alloys Co 2 MnGe, Co 2 MnSi and Co 2 CrAl. The MnSb-terminated surfaces of the half-Heusler compounds present properties similar to those of the bulk compounds and, although the half-metallicity is lost, an important spin polarization at the Fermi level. In contrast to this, the Ni-terminated surface shows an almost zero net spin polarization. While the bulk Co 2 MnGe and Co 2 MnSi are almost half-ferromagnetic, their surfaces lose the half-metallic character and the net spin polarization at the Fermi level is close to zero. In contrast, the CrAl-terminated (001) surface of Co 2 CrAl shows a spin polarization of about 84%.