Chirality-driven topological electronic structure of DNA-like materials. Liu, Y., Xiao, J., Koo, J., & Yan, B. Nature Materials, 20(5):638–644, May, 2021. Bandiera_abtest: a Cg_type: Nature Research Journals Number: 5 Primary_atype: Research Publisher: Nature Publishing Group Subject_term: Electron transfer;Magnetic properties and materials;Topological insulators Subject_term_id: electron-transfer;magnetic-properties-and-materials;topological-insulators![Chirality-driven topological electronic structure of DNA-like materials [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Topological aspects of the geometry of DNA and similar chiral molecules have received a lot of attention, but the topology of their electronic structure is less explored. Previous experiments revealed that DNA can efficiently filter spin-polarized electrons between metal contacts, a process called chiral-induced spin selectivity. However, the underlying correlation between chiral structure and electronic spin remains elusive. In this work, we reveal an orbital texture in the band structure, a topological characteristic induced by the chirality. We found that this orbital texture enables the chiral molecule to polarize the quantum orbital. This orbital polarization effect (OPE) induces spin polarization assisted by the spin–orbit interaction of a metal contact and leads to magnetoresistance and chiral separation. The orbital angular momentum of photoelectrons also plays an essential role in related photoemission experiments. Beyond chiral-induced spin selectivity, we predict that the orbital polarization effect could induce spin-selective phenomena even in achiral but inversion-breaking materials.
@article{liu_chirality-driven_2021,
title = {Chirality-driven topological electronic structure of {DNA}-like materials},
volume = {20},
copyright = {2021 The Author(s), under exclusive licence to Springer Nature Limited},
issn = {1476-4660},
url = {https://www.nature.com/articles/s41563-021-00924-5},
doi = {10.1038/s41563-021-00924-5},
abstract = {Topological aspects of the geometry of DNA and similar chiral molecules have received a lot of attention, but the topology of their electronic structure is less explored. Previous experiments revealed that DNA can efficiently filter spin-polarized electrons between metal contacts, a process called chiral-induced spin selectivity. However, the underlying correlation between chiral structure and electronic spin remains elusive. In this work, we reveal an orbital texture in the band structure, a topological characteristic induced by the chirality. We found that this orbital texture enables the chiral molecule to polarize the quantum orbital. This orbital polarization effect (OPE) induces spin polarization assisted by the spin–orbit interaction of a metal contact and leads to magnetoresistance and chiral separation. The orbital angular momentum of photoelectrons also plays an essential role in related photoemission experiments. Beyond chiral-induced spin selectivity, we predict that the orbital polarization effect could induce spin-selective phenomena even in achiral but inversion-breaking materials.},
language = {en},
number = {5},
urldate = {2021-08-10},
journal = {Nature Materials},
author = {Liu, Yizhou and Xiao, Jiewen and Koo, Jahyun and Yan, Binghai},
month = may,
year = {2021},
note = {Bandiera\_abtest: a
Cg\_type: Nature Research Journals
Number: 5
Primary\_atype: Research
Publisher: Nature Publishing Group
Subject\_term: Electron transfer;Magnetic properties and materials;Topological insulators
Subject\_term\_id: electron-transfer;magnetic-properties-and-materials;topological-insulators},
pages = {638--644},
}
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In this work, we reveal an orbital texture in the band structure, a topological characteristic induced by the chirality. We found that this orbital texture enables the chiral molecule to polarize the quantum orbital. This orbital polarization effect (OPE) induces spin polarization assisted by the spin–orbit interaction of a metal contact and leads to magnetoresistance and chiral separation. The orbital angular momentum of photoelectrons also plays an essential role in related photoemission experiments. 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Previous experiments revealed that DNA can efficiently filter spin-polarized electrons between metal contacts, a process called chiral-induced spin selectivity. However, the underlying correlation between chiral structure and electronic spin remains elusive. In this work, we reveal an orbital texture in the band structure, a topological characteristic induced by the chirality. We found that this orbital texture enables the chiral molecule to polarize the quantum orbital. This orbital polarization effect (OPE) induces spin polarization assisted by the spin–orbit interaction of a metal contact and leads to magnetoresistance and chiral separation. The orbital angular momentum of photoelectrons also plays an essential role in related photoemission experiments. 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