Chiral multiferroicity in two-dimensional hybrid organic-inorganic perovskites

Haining Zheng, Arup Ghosh, M. J. Swamynadhan, Qihan Zhang, Walter P. D. Wong, Zhenyue Wu, Rongrong Zhang, Jingsheng Chen, Fanica Cimpoesu, Saurabh Ghosh, Branton J. Campbell, Kai Wang (), Alessandro Stroppa (), Ramanathan Mahendiran () and Kian Ping Loh ()
Additional contact information
Haining Zheng: International Campus of Tianjin University
Arup Ghosh: National University of Singapore
M. J. Swamynadhan: SRM Institute of Science and Technology
Qihan Zhang: National University of Singapore
Walter P. D. Wong: National University of Singapore
Zhenyue Wu: National University of Singapore
Rongrong Zhang: National University of Singapore
Jingsheng Chen: National University of Singapore
Fanica Cimpoesu: Institute of Physical Chemistry
Saurabh Ghosh: SRM Institute of Science and Technology
Branton J. Campbell: Brigham Young University
Kai Wang: Beijing Jiaotong University
Alessandro Stroppa: c/o Dip.to di Scienze Fisiche e Chimiche - University of L’Aquila
Ramanathan Mahendiran: National University of Singapore
Kian Ping Loh: International Campus of Tianjin University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Chiral multiferroics offer remarkable capabilities for controlling quantum devices at multiple levels. However, these materials are rare due to the competing requirements of long-range orders and strict symmetry constraints. In this study, we present experimental evidence that the coexistence of ferroelectric, magnetic orders, and crystallographic chirality is achievable in hybrid organic-inorganic perovskites [(R/S)-β-methylphenethylamine]2CuCl4. By employing Landau symmetry mode analysis, we investigate the interplay between chirality and ferroic orders and propose a novel mechanism for chirality transfer in hybrid systems. This mechanism involves the coupling of non-chiral distortions, characterized by defining a pseudo-scalar quantity, $$\xi={{{{{\bf{p}}}}}}{{\cdot }}{{{{{\bf{r}}}}}}$$ ξ = p ⋅ r ( $${{{{{\bf{p}}}}}}$$ p represents the ferroelectric displacement vector and $${{{{{\bf{r}}}}}}$$ r denotes the ferro-rotational vector), which distinguishes between (R)- and (S)-chirality based on its sign. Moreover, the reversal of this descriptor’s sign can be associated with coordinated transitions in ferroelectric distortions, Jahn-Teller antiferro-distortions, and Dzyaloshinskii-Moriya vectors, indicating the mediating role of crystallographic chirality in magnetoelectric correlations.

Date: 2024
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DOI: 10.1038/s41467-024-49708-w

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