Crossover from 2D Ferromagnetic Insulator to Wide Band Gap Quantum Anomalous Hall Insulator in Ultrathin MnBi<sub>2</sub>Te<sub>4</sub>
Chi Xuan Trang, Qile Li, Yuefeng Yin, Jinwoong Hwang, Golrokh Akhgar, Iolanda Di Bernardo, Antonija Grubišić‐Čabo, Anton Tadich, Michael S. Fuhrer, Sung‐Kwan Mo, Nikhil V. Medhekar, Mark T. Edmonds
Abstract
. The QAH gap is confirmed to be magnetic in origin, as it becomes gapless with increasing temperature above 8 K.
Topics & Concepts
Topological insulatorCondensed matter physicsBand gapGapless playbackFerromagnetismQuantum anomalous Hall effectInsulator (electricity)Materials sciencePhysicsMagnetic fieldQuantum Hall effectOptoelectronicsQuantum mechanicsTopological Materials and PhenomenaGraphene research and applications2D Materials and Applications