Highly Distorted Chiral Tin-Iodide with Spin Polarized Transport
June 30, 2020
Oriented organic molecules within the 2D hybrid perovskite system can induce new functionality. Here we find that chiral molecules induce a large distortion of the Sn-I octahedra and induce spin-filtering for carriers transporting through the organic molecules.
We synthesized chiral Tin-Iodide 2D perovskite layers with the largest distortion index caused by incorporation of the chiral ligand.
Significance and Impact
Inorganic/organic hybrid systems offer unprecedented opportunities for controlling the spin properties. The organic component in 2D layered perovskites can distort the inorganic component with changes to the properties of the resulting material system. Here, the Chiral-tin perovskite acts as an efficient spin-filter.
- Synthesized single crystals of (R/S-MBA)-SnI4
- Explored solid solutions of Sn/Pb alloys
- Computed band structures and measured CD
- Measured spin-filtering effect