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Photo-induced chirality in a nonchiral crystal

Abstract:

Chirality, a pervasive form of symmetry, is intimately connected to the physical properties of solids, as well as the chemical and biological activity of molecular systems. However, inducing chirality in a nonchiral material is challenging because this requires that all mirrors and all roto-inversions be simultaneously broken. Here, we show that chirality of either handedness can be induced in the nonchiral piezoelectric material boron phosphate (BPO4) by irradiation with terahertz pulses. Resonant excitation of either one of two orthogonal, degenerate vibrational modes determines the sign of the induced chiral order parameter. The optical activity of the photo-induced phases is comparable to the static value of prototypical chiral α-quartz. Our findings offer new prospects for the control of out-of-equilibrium quantum phenomena in complex materials.

Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1126/science.adr4713

Authors


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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Role:
Author
ORCID:
0000-0002-0235-1352
More by this author
Role:
Author
ORCID:
0000-0002-8057-4826
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Role:
Author
ORCID:
0000-0003-2774-7684
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Role:
Author
ORCID:
0000-0001-7325-4632
More by this author
Role:
Author
ORCID:
0000-0003-2332-4115



Publisher:
American Association for the Advancement of Science
Journal:
Science More from this journal
Volume:
387
Issue:
6732
Pages:
431-436
Publication date:
2025-01-23
Acceptance date:
2024-11-22
DOI:
EISSN:
1095-9203
ISSN:
0036-8075
Pmid:
39847620


Language:
English
Pubs id:
2080685
Local pid:
pubs:2080685
Deposit date:
2025-03-06

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