Ferroelectric and Multiferroic Properties of Quasi-2D Organic Charge-Transfer Salts
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866909321925754880 |
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| author | Lang, Michael Lunkenheimer, Peter Ganter, Owen Winter, Steve Müller, Jens |
| author_facet | Lang, Michael Lunkenheimer, Peter Ganter, Owen Winter, Steve Müller, Jens |
| contents | In conventional ferroelectrics the electric dipoles are generated by off-center displacements of ions. In recent years, a new type of so-called electronic ferroelectrics has attracted great attention, where the polarization is driven by electronic degrees of freedom. Of particular interest are materials with strong electronic correlations, featuring a variety of intriguing phenomena and instabilities, which may interact with or even induce electronic ferroelectricity. In this review, we will focus on the class of strongly correlated charge-transfer salts, where electronic ferroelectricity was suggested by theory and has been confirmed by numerous experiments. The paper summarizes some basic physical properties of various relevant quasi-two dimensional salts and gives some background on the experimental tools applied to establish ferroelectricity. We discuss the key experimental observations, including the exciting discovery of multiferroicity, and provide some theoretical considerations on the magnetoelectric couplings that are of relevance here. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2409_13836 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Ferroelectric and Multiferroic Properties of Quasi-2D Organic Charge-Transfer Salts Lang, Michael Lunkenheimer, Peter Ganter, Owen Winter, Steve Müller, Jens Strongly Correlated Electrons In conventional ferroelectrics the electric dipoles are generated by off-center displacements of ions. In recent years, a new type of so-called electronic ferroelectrics has attracted great attention, where the polarization is driven by electronic degrees of freedom. Of particular interest are materials with strong electronic correlations, featuring a variety of intriguing phenomena and instabilities, which may interact with or even induce electronic ferroelectricity. In this review, we will focus on the class of strongly correlated charge-transfer salts, where electronic ferroelectricity was suggested by theory and has been confirmed by numerous experiments. The paper summarizes some basic physical properties of various relevant quasi-two dimensional salts and gives some background on the experimental tools applied to establish ferroelectricity. We discuss the key experimental observations, including the exciting discovery of multiferroicity, and provide some theoretical considerations on the magnetoelectric couplings that are of relevance here. |
| title | Ferroelectric and Multiferroic Properties of Quasi-2D Organic Charge-Transfer Salts |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2409.13836 |