Structural descriptor for enhanced spin-splitting in 2D hybrid perovskites.
Structural descriptor for enhanced spin-splitting in 2D hybrid perovskites.
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结构描述符,用于增强2D混合钙壶中的自旋分解。
DOI:
10.1038/s41467-021-25149-7
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发表时间:
2021-08-17
影响因子:
16.6
通讯作者:
Mitzi DB
中科院分区:
文献类型:
--
作者:
Jana MK;Song R;Xie Y;Zhao R;Sercel PC;Blum V;Mitzi DB
Two-dimensional (2D) hybrid metal halide perovskites have emerged as outstanding optoelectronic materials and are potential hosts of Rashba/Dresselhaus spin-splitting for spin-selective transport and spin-orbitronics. However, a quantitative microscopic understanding of what controls the spin-splitting magnitude is generally lacking. Through crystallographic and first-principles studies on a broad array of chiral and achiral 2D perovskites, we demonstrate that a specific bond angle disparity connected with asymmetric tilting distortions of the metal halide octahedra breaks local inversion symmetry and strongly correlates with computed spin-splitting. This distortion metric can serve as a crystallographic descriptor for rapid discovery of potential candidate materials with strong spin-splitting. Our work establishes that, rather than the global space group, local inorganic layer distortions induced via appropriate organic cations provide a key design objective to achieve strong spin-splitting in perovskites. New chiral perovskites reported here couple a sizeable spin-splitting with chiral degrees of freedom and offer a unique paradigm of potential interest for spintronics. Two-dimensional hybrid perovskites exhibiting Rashba/Dresselhaus spin-splitting can be potentially used for spin-selective transport and spin-orbitronics, yet the structural determinants of spin-splitting are not well-understood. Here, the authors reveal a specific inorganic layer distortion that correlates with bulk spin-splitting in these materials.
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影响因子:
13.6
作者:
Lu, Haipeng;Wang, Jingying;Vardeny, Zeev Valy
通讯作者:
Vardeny, Zeev Valy
影响因子:
8.6
作者:
Liu, Chi;Huhn, William;Blum, Volker
通讯作者:
Blum, Volker
影响因子:
--
作者:
DRESSELHAUS, G
通讯作者:
DRESSELHAUS, G
影响因子:
3.4
作者:
Huhn, William P.;Blum, Volker
通讯作者:
Blum, Volker
影响因子:
17.1
作者:
Kepenekian, Mikael;Robles, Roberto;Even, Jacky
通讯作者:
Even, Jacky