Two-Dimensional Chiral Covalent Organic Frameworks with Significant Rashba–Dresselhaus Spin Splitting DOI
Shanshan Liu, Xingxing Li, Qunxiang Li

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(34), P. 8790 - 8796

Published: Aug. 21, 2024

Two-dimensional (2D) nonmagnetic semiconductors with large Rashba–Dresselhaus (R-D) spin splitting hold promise for applications in electric-field-controlled spintronics. Current research primarily focuses on metal-based R-D materials. A natural question is whether significant can be realized metal-free organic systems. In this work, through first-principles calculations, we demonstrate that 2D chiral covalent frameworks (CCOFs) serve as a potential platform designing semiconductors. By constructing CCOFs benzene cores and iodine-based linkers, at the valence band achieved. Particularly, 2,2′-diiodobiphenyl energy of 12 meV, accompanied by coupling constant (α) 0.12 eVÅ. Meanwhile, texture adjustable via tuning chirality. Furthermore, group substitutions, notably increased up to 32 meV 0.4 eVÅ, comparable

Language: Английский

Two-Dimensional Chiral Covalent Organic Frameworks with Significant Rashba–Dresselhaus Spin Splitting DOI
Shanshan Liu, Xingxing Li, Qunxiang Li

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(34), P. 8790 - 8796

Published: Aug. 21, 2024

Two-dimensional (2D) nonmagnetic semiconductors with large Rashba–Dresselhaus (R-D) spin splitting hold promise for applications in electric-field-controlled spintronics. Current research primarily focuses on metal-based R-D materials. A natural question is whether significant can be realized metal-free organic systems. In this work, through first-principles calculations, we demonstrate that 2D chiral covalent frameworks (CCOFs) serve as a potential platform designing semiconductors. By constructing CCOFs benzene cores and iodine-based linkers, at the valence band achieved. Particularly, 2,2′-diiodobiphenyl energy of 12 meV, accompanied by coupling constant (α) 0.12 eVÅ. Meanwhile, texture adjustable via tuning chirality. Furthermore, group substitutions, notably increased up to 32 meV 0.4 eVÅ, comparable

Language: Английский

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