Negative Magnetoresistance without Chiral Anomaly in Topological Insulators
Negative Magnetoresistance without Chiral Anomaly in Topological Insulators
An intriguing phenomenon in topological semimetals and topological insulators is the negative magnetoresistance (MR) observed when a magnetic field is applied along the current direction. A prevailing understanding to the negative MR in topological semimetals is the chiral anomaly, which, however, is not well defined in topological insulators. We calculate …