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. 2014 Apr 30;111(19):6900–6904. doi: 10.1073/pnas.1405780111

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Fig. 2. — The band structures and angular momentum textures of the TB model. The band structures are depicted (A) without an ISB field and (B) with and having the ferroelectric moment along the [001] direction. In B, the helical direction of the orbital angular momenta is denoted by CW (clockwise) or CCW (counterclockwise) in red color near CBM whereas that of the spin angular momenta is shown in blue near VBM. The orbital (red solid arrows) and spin (blue dotted arrows) angular momenta are presented in (C) VBM and (D) CBM bands near the A point of the Brillouin zone for with the constant energy contours at the horizontal energy cuts in B.

Inline graphic — The band structures and angular momentum textures of the TB model. The band structures are depicted (A) without an ISB field and (B) with and having the ferroelectric moment along the [001] direction. In B, the helical direction of the orbital angular momenta is denoted by CW (clockwise) or CCW (counterclockwise) in red color near CBM whereas that of the spin angular momenta is shown in blue near VBM. The orbital (red solid arrows) and spin (blue dotted arrows) angular momenta are presented in (C) VBM and (D) CBM bands near the A point of the Brillouin zone for with the constant energy contours at the horizontal energy cuts in B.