Phys.org December 11, 2024 The presence of net magnetization limits device scalability and compatibility with phases, such as superconductors and topological insulators. Altermagnetism has been proposed as a solution to these restrictions combined with the antiferromagnetic-like vanishing net magnetization. So far, altermagnetic ordering has been inferred from spatially averaged probes. An international team of researchers (UK, Switzerland, Czech Republic, Germany) demonstrated nanoscale imaging of altermagnetic states from 100-nanometre-scale vortices and domain walls to 10-micrometre-scale single-domain states in manganese telluride. They combined the time-reversal-symmetry-breaking sensitivity of X-ray magnetic circular dichroism with magnetic linear dichroism to achieve maps of the local altermagnetic […]
Tag Archives: Condensed matter
Taking the guesswork out of twistronics
Nanowerk July 27, 2020 An international team of researchers (USA – Harvard University, China) introduces theoretical concepts and methods for the processing of materials information, and as a case study, apply them to investigate the electronic structure of multi-layer graphene-based assemblies in a high-throughput fashion. They provide a critical discussion of patterns and trends in tight binding band structures and identify specific layered assemblies using low-dispersion electronic bands as indicators of potentially interesting physics like strongly correlated behavior. A combination of data-driven models for visualization and prediction is used to intelligently explore the materials space. This work more generally aims […]