Anomalous 140 K electronic transition in Bi${}_2$Se${}_3$: Possible charge order in a defect-engineered system

Yanan Li, Christian Parsons, Sanath Kumar Ramakrishna +4

We report an anomalous electronic transition at 140~K in high-quality Bi${}_2$Se${}_3$, where charge order emerges in a defect-tuned system. Native defects (Se vacancies and Bi interca…