The brand new assessment paper on magnetic topological supplies of Andrei Bernevig, Princeton College, USA, Haim Beidenkopf, Weizmann Institute of Science, Israel, and Claudia Felser, Max Planck Institute for Chemical Physics of Solids, Dresden, Germany, introduces the brand new theoretical idea that interweave magnetism and topology. It identifies and surveys potential new magnetic topological supplies, mentions their attainable future functions in spin and quantum electronics and as supplies for environment friendly vitality conversion. The assessment discusses the connection between topology, symmetry and magnetism at a degree appropriate for graduate college students in physics, chemistry and supplies science which have a fundamental data of condensed matter physics.
Magnetic topological supplies characterize a category of compounds whose properties are strongly influenced by the topology of the digital wavefunctions coupled with their spin configuration. Topology is a straightforward idea coping with the surfaces of objects. The topology of a mathematical construction is an identical whether it is preserved below steady deformation. A pancake has the identical topology as a dice, a donut as a espresso cup, and a pretzel as a board with three holes. Including spin presents extra construction — a brand new diploma of freedom — for the conclusion of recent states of matter that aren’t identified in non-magnetic supplies. Magnetic topological supplies can help chiral channels of electrons and spins, and can be utilized for an array of functions from info storage, management of dissipationless spin and cost transport, to massive responses below exterior stimuli akin to temperature and light-weight.
The assessment summarizes the theoretical and experimental progress achieved within the area of magnetic topological supplies starting with the theoretical prediction of the Quantum Anomalous Corridor Impact with out Landau ranges, and resulting in the latest discoveries of magnetic Weyl semimetals and antiferromagnetic topological insulators. Current theoretical progress that resulted within the tabulation of all magnetic symmetry group representations and topology is printed. Because of this, all identified magnetic supplies — together with future discoveries — will be totally characterised by their topological properties. The identification of supplies for a selected technological utility (e.g. Quantum Anomalous Corridor) is easy. Utilizing this strategy magnetic topological supplies with magnetic transition temperatures above room temperature will be recognized or if essential, designed for classical functions akin to thermoelectric units, Corridor sensors or environment friendly catalysts however they’re additionally helpful for quantum functions at low temperatures, together with computing and sensing.
Andrei Bernevig feedback that “The belief of the QAHE at room temperature could be revolutionary, overcoming limitations of many data-based applied sciences, that are affected by energy losses from Joule heating,” and his colleague Stuart Parkin, Max PIanck Institute of Microstructure Physics, Halle, Germany, “can think about how the novel properties of this new class of magnetic supplies can pave the way in which to new generations of low vitality consuming quantum digital and spintronic units and even novel superconducting spintronic units.” Claudia Felser, MPI CPfS is most enthusiastic about their potential functions in chemistry. She says “if we will design a magnetic catalyst for water splitting we’d be capable to change the catalytic properties with an exterior area, which might enable us to modify on and off catalysis.” For Haim Beidenkopf, the quantum laptop is maybe probably the most thrilling path in science at present: “The design of a fabric that reveals a excessive temperature quantum anomalous Corridor through quantum confinement of a magnetic Weyl semimetal, and its integration into quantum units is my predominant purpose for the longer term.” The sector of magnetic topological supplies clearly has and could have impression in each the scientific and technological worlds.
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- B. Andrei Bernevig, Claudia Felser, Haim Beidenkopf. Progress and prospects in magnetic topological supplies. Nature, 2022; 603 (7899): 41 DOI: 10.1038/s41586-021-04105-x
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Max Planck Institute for Chemical Physics of Solids. “The interaction between topology and magnetism has a vibrant future.” ScienceDaily. ScienceDaily, 2 March 2022. <www.sciencedaily.com/releases/2022/03/220302113059.htm>.
Max Planck Institute for Chemical Physics of Solids. (2022, March 2). The interaction between topology and magnetism has a vibrant future. ScienceDaily. Retrieved March 2, 2022 from www.sciencedaily.com/releases/2022/03/220302113059.htm
Max Planck Institute for Chemical Physics of Solids. “The interaction between topology and magnetism has a vibrant future.” ScienceDaily. www.sciencedaily.com/releases/2022/03/220302113059.htm (accessed March 2, 2022).