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Converting normal insulators into topological insulators via tuning orbital levels

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Academic year: 2021

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FIG. 2. (Color online) The calculated band structures of pure CsGeBr 3 without (a) and with (b) SOC; the real part of the wave functions of the R 1 + (c) and R 15− (d) states without SOC, the blue (yellow) isosurfaces represent the “ + ” (“ − ”) sign of th
FIG. 3. (Color online) The PBE calculated electronic band struc- struc-tures of CsGe 0.875 C 0.125 Br 3 without (a) and with (b) SOC; the calculated energy level of  6 + , −6 , and  8 − states (c) as the artificial SOC strength (λ) increases from zero to o
FIG. 4. (Color online) The calculated LDOS of CsGe 0.875 C 0.125 Br 3 . The Fermi level is set to zero, and indicated by the dashed line

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