Speaker
Nan Li
(Xi‘an Jiatong University)
Description
Considering quantum effects of field emission in a nanogap, we explore the impact of space charge on the field emission current density by using one dimension quantum model which includes exchange-correlation effects and space-charge effects. It is found that the quantum effect is significant within a certain range of applied voltage and gap. Therefore, the quantum regime, high current regime, direct tunneling regime, low current regime and transition regime are divided according to the continuous change of applied voltage and gap for a metal-vacuum-metal system at nanoscale. The smooth transition among these regimes are also demonstrated.
Author
Nan Li
(Xi‘an Jiatong University)
Co-authors
Xinyu Gao
(Xi‘an Jiatong University)
Ziang Jing
(Xi'an Jiaotong Univerisity)
Bing Xiao
(Xi‘an Jiatong University)
Yonghong Cheng
(Xi'an Jiaotong Univerisity)
Kejing Wang
(Southwest Branch of State Grid Corporation of China)
