"Large Magnetic Gap in a Designer Ferromagnet–Topological Insulator–Fer" by Qile Li, Chi Xuan Trang et al.
Combining magnetism and nontrivial band topology gives rise to quantum anomalous Hall (QAH) insulators and exotic quantum phases such as the QAH effect where current flows without dissipation along quantized edge states. Inducing magnetic order in topological insulators via proximity to a magnetic material offers a promising pathway toward achieving the QAH effect at a high temperature for lossless transport applications. One promising architecture involves a sandwich structure comprising two single-septuple layers (1SL) of MnBi2Te4 (a 2D ferromagnetic insulator) with ultrathin few quintuple l...
Source: uow.edu.au