Switching a Normal Insulator into a Topological Insulator via Electric Field with Application to Phosphorene Liu, Qihang ; Zhang, Xiuwen ; Abdalla, L. B. ; Fazzio, Adalberto ; Zunger, Alex Abstract Publication: Nano Letters Pub Date: February 2015 DOI: 10.1021/nl5043769 Bibcode: 2015NanoL..15.1222L