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000050607 084__ $$2WoS$$aPhysics, Applied
000050607 1001_ $$0P:(DE-Juel1)VDB37180$$aLezaic, M.$$b0$$uFZJ
000050607 245__ $$aScanning tunnelling microscopy of surfaces of half-metals: an ab-initio study on NiMnSb(001)
000050607 260__ $$aBristol$$bIOP Publ.$$c2006
000050607 300__ $$a797 - 802
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000050607 440_0 $$03700$$aJournal of Physics D - Applied Physics$$v39$$x0022-3727
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000050607 520__ $$aWe 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 tunnelling microscopy. For the MnSb-terrninated 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.
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000050607 7001_ $$0P:(DE-Juel1)130823$$aMavropoulos, Ph.$$b1$$uFZJ
000050607 7001_ $$0P:(DE-Juel1)130545$$aBihlmayer, G.$$b2$$uFZJ
000050607 7001_ $$0P:(DE-Juel1)130548$$aBlügel, S.$$b3$$uFZJ
000050607 773__ $$0PERI:(DE-600)1472948-9$$a10.1088/0022-3727/39/5/S05$$gVol. 39, p. 797 - 802$$p797 - 802$$q39<797 - 802$$tJournal of physics / D$$v39$$x0022-3727$$y2006
000050607 8567_ $$uhttp://dx.doi.org/10.1088/0022-3727/39/5/S05
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000050607 9201_ $$0I:(DE-Juel1)VDB30$$d31.12.2006$$gIFF$$kIFF-TH-I$$lTheorie I$$x0
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