Thermal Magnetoelectrics in all Inorganic Quasi-Two-Dimensional Halide Perovskites

• Main Authors: Zhu, Tong, Lu, Xuezeng, Aoyama, Takuya, Fujita, Koji, Nambu, Yusuke, Saito, Takashi, Takatsu, Hiroshi, Kawasaki, Tatsushi, Terauchi, Takumi, Kurosawa, Shunsuke, Yamaji, Akihiro, Li, Hao-Bo, Tassel, Cedric, Ohgushi, Kenya, Rondinelli, James M, Kageyama, Hiroshi
• Format: Journal Article
• Language: English
• Published: 15.11.2023
• Subjects: Physics - Materials Science
• DOI: 10.48550/arxiv.2311.09324

From lithium-ion batteries to high-temperature superconductors, oxide materials have been widely used in electronic devices. However, demands of future technologies require materials beyond oxides, as anion chemistries distinct from oxygen can expand the palette of mechanisms and phenomena, to achieve superior functionalities. Examples include nitride-based wide bandgap semiconductors and halide perovskite solar cells, with MAPbBr3 being a representation revolutionizing photovoltaics research. Here, we demonstrate magnetoelectric behaviour in quasi-two-dimensional halides (K,Rb)3Mn2Cl7 through simultaneous thermal control of electric and magnetic polarizations by exploiting a polar-to-antipolar displacive transition. Additionally, our calculations indicate a possible polarization switching path including a strong magnetoelectric coupling, indicating halides can be excellent platforms to design future multiferroic and ferroelectric devices. We expect our findings to broaden the exploration of multiferroics to non-oxide materials and open access to novel mechanisms, beyond conventional electric/magnetic control, for coupling ferroic orders.