Unconventional spin texture of a topologically nontrivial semimetal Sb(110)
The surfaces of antimony are characterized by the presence of spin-split states within the projected bulk band gap and the Fermi contour is thus expected to exhibit a spin texture. Using spin-resolved density functional theory calculations, we determine the spin polarization of the surface bands of...
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| creator | Strozecka, A Eiguren, A Bianchi, M Guan, D Voetmann, C H Bao, S Hofmann, Ph Pascual, J I |
| description | The surfaces of antimony are characterized by the presence of spin-split states within the projected bulk band gap and the Fermi contour is thus expected to exhibit a spin texture. Using spin-resolved density functional theory calculations, we determine the spin polarization of the surface bands of Sb(110). The existence of the unconventional spin texture is corroborated by the investigations of the electron scattering on this surface. The charge interference patterns formed around single scattering impurities, imaged by scanning tunneling microscopy, reveal the absence of direct backscattering signal. We identify the allowed scattering vectors and analyze their bias evolution in relation to the surface-state dispersion. |
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| subjects | Antimony Backscattering Band theory Density functional theory Polarization (spin alignment) Scattering Texture |
| title | Unconventional spin texture of a topologically nontrivial semimetal Sb(110) |
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