Scientists have discovered the first antiferromagnetic topological quantum material, Scientists have discovered a new type of mass quantum material with inherent magnetic and topological properties. This new material is called manganese bismuth telluride (MnBi2Te4) and is very promising for use in antiferromagnetic spintronics and quantum technology.
First antiferromagnetic topological quantum material, The Quantum materials are the focus of worldwide research in various scientific disciplines. This class of materials seems increasingly complex and rich in physical phenomena such as magnetism, superconductivity or topology and is therefore very promising for technological advances in information processing, sensors, computers, and others.
The extraordinary properties in quantum materials often require special conditions, difficult to reach such as low temperatures, very strong magnetic fields, or high pressure.
Scientists are therefore looking for materials that show their exotic bonds even at room temperature, without external magnetic fields and under normal air pressure. The so-called Magnetic Topological Insulator (MTI) is very promising.
The significance of this discovery for science is enormous: MTI crystals have a state at the edge of their surface that can realize quantized Hall conductivity even without an external magnetic field. Also, the making of AFMTI has made an important contribution to the developing field of antiferromagnetic spintronics. The new Van der Waal magnetic research area can also benefit from the new 2D ferromagnets.
Research teams around the world have joined the study of the interaction between magnetism and topology at MnBi2Te4. Recent results indicate that there are more MnBi2Te4 structural derivatives that are relevant to MTI.
We are witnessing the emergence of a new family of magnetic topology insulators based on internal magnetization rather than magnetic doping. There is a lot of competition between teams around the world, which also sparked several new publications on this issue, the researchers said.