Abstract：
:Manipulating symmetry environments of metal ions to control functional properties is a fundamental concept of chemistry. For example, lattice strain enables control of symmetry in solids through a change in the nuclear positions surrounding a metal centre. Light-matter interactions can also induce strain but providing dynamic symmetry control is restricted to specific materials under intense laser illumination. Here, we show how effective chemical symmetry can be tuned by creating a symmetry-breaking rotational bulk polarisation in the electronic charge distribution surrounding a metal centre, which we term a meta-crystal field. The effect arises from an interface-mediated transfer of optical spin from a chiral light beam to produce an electronic torque that replicates the effect of strain created by high pressures. Since the phenomenon does not rely on a physical rearrangement of nuclear positions, material constraints are lifted, thus providing a generic and fully reversible method of manipulating effective symmetry in solids.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Kelly C,MacLaren DA,McKay K,McFarlane A,Karimullah AS,Gadegaard N,Barron LD,Franke-Arnold S,Crimin F,Götte JB,Barnett SM,Kadodwala Mdoi
10.1038/s41467-020-18869-9subject
Has Abstractpub_date
2020-10-14 00:00:00pages
5169issue
1issn
2041-1723pii
10.1038/s41467-020-18869-9journal_volume
11pub_type
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