Simple microscopic model for magneto-electric coupling in type-II antiferromagnetic multiferroics
| Autor: | L. Pili, R. A. Borzi, D. C. Cabra, S. A. Grigera |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Condensed Matter - Other Condensed Matter
Condensed Matter::Quantum Gases Condensed Matter - Strongly Correlated Electrons Condensed Matter::Materials Science Strongly Correlated Electrons (cond-mat.str-el) FOS: Physical sciences Condensed Matter::Strongly Correlated Electrons Other Condensed Matter (cond-mat.other) |
| DOI: | 10.48550/arxiv.2111.06765 |
| Popis: | We present a simple two-dimensional model in which the lattice degrees of freedom mediate the interactions between magnetic moments and electric dipoles. This model reproduces basic features, such as a sudden electric polarization switch-off when a magnetic field is applied and the ubiquitous dimerized distortion patterns and magnetic $\uparrow \uparrow \downarrow \downarrow$ ordering, observed in several multiferroic materials of different composition. The list includes E-type manganites, RMnO$_3$, nickelates such as in YNiO$_3$ and other materials under strain, such as TbMnO$_3$. In spite of its simplicity, the model presented here captures the essence of the origin of multiferroicity in a large class of type II multiferroics. Comment: 5 pages, 5 figures, Sup Info |
| Databáze: | OpenAIRE |
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