Intervalley Excitonic Hybridization, Optical Selection Rules, and Imperfect Circular Dichroism in Monolayer $htext{−}mathrm{BN}$
Author(s): Fang Zhang, Chin Shen Ong, Jia Wei Ruan, Meng Wu, Xing Qiang Shi, Zi Kang Tang, and Steven G. LouieWe perform first-principles GW plus Bethe-Salpeter equation calculations to investigate the photophysics of monolayer hexagonal boron nitride (h−BN), revealing excitons with novel k-space characteristics. The excitonic states forming the first and third peaks in its absorption spectrum are s-like, b…[Phys. Rev. Lett. 128, 047402] Published Thu Jan 27, 2022
Published in: "Physical Review Letters".