Current Transients in Graphene Electronics under Single-Particle Irradiation.

ABSTRACT: Low-dimensional materials hold great promise in next-generation electronics. However, the performance of such devices is susceptible to external perturbations such as irradiation due to the high exposure of constituent atoms to the environment. Herein, real-time time-dependent density-functional theory at the tight-binding level extended to open systems for electrons and Ehrenfest dynamics for ions is developed and used to explore the effects of single-H irradiation on graphene electronics. The results show that the peak current displays distinct energy and site dependences, which are largely different from the dependences of the stopping powers. Charge-density analysis shows that the current transients are driven by delocalized plasmonic excitation, in contrast to localized electronic exc

SUBMITTER: He W 

PROVIDER: S-EPMC11935796 | biostudies-literature | 2023 Jul

REPOSITORIES: biostudies-literature