Table 1. Electron (me*) and Hole (mh*) Effective Masses (Relative to the Mass of an Electron, m0) Calculated as Part of This Study from the Band Structures of CuBiSCl2 (Cmcm), CuBiSeCl2 (Cmcm), and CuBiSeCl2 (Pnma) in the kx, ky, and kz Directions.
CuBiSeCl2 (Pnma)a | ky (Γ → Y) | kz (Γ → Z) | kx (Γ → X) |
---|---|---|---|
me* (m0) | 1.0 | 12 | 0.2 |
mh* (m0) | 8 | 1.6 | 4 |
CuBiSeCl2 (Cmcm) | kx (Y → X1) | ky (Y → Γ) | kz (Y → T) |
---|---|---|---|
me* (m0) | 3 | 4.2 | 0.7 |
mh* (m0) | 2.5 | 0.7 | 1.3 |
CuBiSCl2 (Cmcm) | |||
me* (m0) | 0.25 | 3 | 0.65 |
mh* (m0) | 2.9 | 0.75 | 1.1 |
Indicates that the effective masses for the Pnma structure of CuBiSeCl2 have been reordered relative to the Cmcm structures such that the directions are related by kx → kz, kz → ky, and ky → kx to account for symmetry lowering effects between Cmcm and Pnma and allow for ease of comparison between different symmetries.