Fig. 1: Hidden spin in TMDs. | Nature Communications

Fig. 1: Hidden spin in TMDs.

From: Hidden spin-orbital texture at the \(\overline{{{\Gamma }}}\)-located valence band maximum of a transition metal dichalcogenide semiconductor

Fig. 1

a Real-space structure of 2H-WSe2. A single unit cell is highlighted. Dashed line indicates the division between top (t) and bottom (b) sublayers (SL). Arrows indicate the direction of the effective electric field originating from W-Se dipoles. b Schematic of the sub-layer resolved valence band structure of bulk 2H-WSe2. Colours indicate the direction of the out-of-plane Rashba-type spin polarisation; c, d Equivalent schematics for 1T-HfSe2. The effective out-of-plane dipole originating from Hf-Se bonds is localised to a half unit cell, giving rise to an in-plane Rashba splitting of the px,y bands around the Γ point. W, Hf and Se atoms are in cyan, grey and red, respectively.

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