title: The surface potential of insulating thin films negatively charged by a low-energy focused electron beam.
authors.affiliation: Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Department of Electronic Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
authors.forename: Wei-Qin
authors.initials: WQ
authors.lastname: Li
authors.forename: Hai-Bo
authors.initials: HB
authors.lastname: Zhang