Matches in SemOpenAlex for { <https://semopenalex.org/work/W2883006933> ?p ?o ?g. }
- W2883006933 abstract "Gray tin, also known as $ensuremath{alpha}$-Sn, can be turned into a three-dimensional topological insulator (3D-TI) by strain and finite-size effects. Such room-temperature 3D-TI is peculiarly interesting for spintronics due to the spin-momentum locking along the Dirac cone (linear dispersion) of the surface states. Angle-resolved photoemission spectroscopy (ARPES) has been used to investigate the dispersion close to the Fermi level in thin (001)-oriented epitaxially strained films of $ensuremath{alpha}$-Sn for different film thicknesses as well as for different capping layers (Al, ${mathrm{AlO}}_{x}$, and MgO). Indeed a proper capping layer is necessary to be able to use $ensuremath{alpha}$-Sn surface states for spintronic applications. In contrast with free surfaces or surfaces coated with Ag, coating the $ensuremath{alpha}$-Sn surface with Al or ${mathrm{AlO}}_{x}$ leads to a drop in the Fermi level below the Dirac point, and an important consequence for electronic transport is the presence of bulk states at the Fermi level. $ensuremath{alpha}$-Sn films coated by ${mathrm{AlO}}_{x}$ are studied by electrical magnetotransport: Despite magnetotransport properties of the bulk electronic states of the ${mathrm{ensuremath{Gamma}}}_{8}$ band playing an important role as suggested by ab initio calculations, there is clear evidence of surface states revealed by Shubnikov--de Haas oscillations corresponding to the ARPES observation." @default.
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- W2883006933 date "2018-11-29" @default.
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- W2883006933 title "Angular-resolved photoemission electron spectroscopy and transport studies of the elemental topological insulator <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML><mml:mi>α</mml:mi></mml:math> -Sn" @default.
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- W2883006933 doi "https://doi.org/10.1103/physrevb.98.195445" @default.
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