Chiral Mesostructured NiO Films with Spin Polarisation.
antiferromagnetic material
chiral mesostructure
chirality-dependent spin polarisation
magnetic circular dichroism
magnetic-tip conducting atomic force microscopy
Journal
Angewandte Chemie (International ed. in English)
ISSN: 1521-3773
Titre abrégé: Angew Chem Int Ed Engl
Pays: Germany
ID NLM: 0370543
Informations de publication
Date de publication:
19 Apr 2021
19 Apr 2021
Historique:
received:
23
01
2021
pubmed:
9
2
2021
medline:
9
2
2021
entrez:
8
2
2021
Statut:
ppublish
Résumé
Spin polarisation is found in the centrosymmetric nonferromagnetic crystals, chiral mesostructured NiO films (CMNFs), fabricated through the symmetry-breaking effect of a chiral molecule. Two levels of chirality were identified: primary nanoflakes with atomically twisted crystal lattices and secondary helical stacking of the nanoflakes. Spin polarisation of the CMNFs was confirmed by chirality-dependent magnetic-tip conducting atomic force microscopy (mc-AFM) and magnetic field-independent magnetic circular dichroism (MCD). Electron transfer in the symmetry-breaking electric field was speculated to create chirality-dependent effective magnetic fields. The asymmetric spin-orbit coupling (SOC) generated by effective magnetic fields selectively modifies the opposite spin motion in the antipodal CMNFs. Our findings provide fundamental insights for directional spin control in unprecedented functional inorganic materials.
Identifiants
pubmed: 33554464
doi: 10.1002/anie.202101069
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
9421-9426Subventions
Organisme : National Natural Science Foundation of China
ID : 21931008
Organisme : National Natural Science Foundation of China
ID : 21975184
Organisme : National Natural Science Foundation of China
ID : 21873072
Organisme : National Natural Science Foundation of China
ID : 21922304
Organisme : Science foundation of the Shanghai Municipal science and Technology Commission
ID : 19JC1410300
Informations de copyright
© 2021 Wiley-VCH GmbH.
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