Physics – Condensed Matter – Materials Science
Scientific paper
2005-10-18
J. Phys. D: Appl. Phys. 39 No 5, 797-802 (2006)
Physics
Condensed Matter
Materials Science
Submitted to J. Phys. D: Appl. Phys
Scientific paper
10.1088/0022-3727/39/5/S05
We present a first-principles study of the unreconstructed (001) surfaces of the half-metallic ferromagnet NiMnSb. Both terminations (MnSb and Ni) are considered. We find that half-metallicity is lost at the surfaces. After a discussion of the geometric relaxations and the spin-polarized surface band structure, we focus on topography images which are expected to be found with spin-polarized scanning tunneling microscopy. For the MnSb-terminated surface we find that only the Sb atoms are visible, reflecting a geometric buckling caused by relaxations. For the Ni-terminated surface we find a strong contrast between the images of forward and reverse tip-sample-bias of 0.5 eV, as well as a stripe-like image for reverse bias. We interpret these findings in terms of highly directional surface states which are formed in the spin-down gap region.
Bihlmayer Gustav
Blügel Stefan
Lezaic Marjana
Mavropoulos Phivos
No associations
LandOfFree
Scanning tunneling microscopy of surfaces of half-metals: an ab-initio study on NiMnSb(001) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Scanning tunneling microscopy of surfaces of half-metals: an ab-initio study on NiMnSb(001), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning tunneling microscopy of surfaces of half-metals: an ab-initio study on NiMnSb(001) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-242401