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A team from the Institute of Molecular Science (ICMol) of the University of Valencia has taken a step forward in the field of twistronics, an area that brings together physics, chemistry and nanotechnology towards the search and control of new and extraordinary properties in graphene and other two-dimensional materials. The work appears published in the journal Nature Materials.
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Twistronics is an emerging field that explores the ability of two-dimensional materials to provide themselves, when their stacked layers are rotated, with new electrical, magnetic and optical properties. One of the most unique results in this field was the observation of superconductivity in graphene (2019) by rotating two stacked layers of this sheet material from graphite at a small angle.
The study now published in Nature Materials demonstrates, for the first time, that two-dimensional materials other than graphene can also present emerging and unexplored properties. Specifically, the ICMol team has discovered that a magnetic bilayer rotated at an angle of 90 degrees exhibits spectacular magneto-transport properties, such as the appearance of magnetic multistates with memory effects. This pioneering result predicts a promising future for the design of new materials with ‘on demand’ properties, of great interest in emerging technologies such as spintronics or quantum technologies.
The team that developed this research is formed by Carla Boix-Constant, doctoral researcher at ICMol; Samuel Mañas-Valero, currently a Marie Curie postdoctoral researcher at the Delft University of Technology (Netherlands), and Eugenio Coronado, full professor of Inorganic Chemistry at the University of Valencia and researcher at the ICMol. The University of Edinburgh has also participated in the work.
Reference:
Multistep magnetization switching in orthogonally twisted ferromagnetic monolayers. Carla Boix-Constant, Sarah Jenkins, Ricardo Rama-Eiroa, Elton J. G. Santos, Samuel Mañas-Valero & Eugenio Coronado. Nature Materials.
