Eur. Phys. J. Special Topics 228, 713–718 (2019)
https://doi.org/10.1140/epjst/e2019-800175-x

Regular Article

Low energy photoemission from (100) Ba_1−xLa_xSnO₃ thin films for photocathode applications^★

¹ CLASSE, Cornell University, Ithaca, NY 14853, USA
² Department of Physics, University of Illinois, Chicago, IL 60607-7059, USA
³ Department of Materials Science and Engineering, Cornell University, Ithaca, NY 14853, USA
⁴ PARADIM, Cornell University, Ithaca, NY 14853, USA
⁵ Kavli Institute at Cornell for Nanoscale Science, Ithaca, NY 14853, USA
⁶ LASSP, Department of Physics, Cornell University, Ithaca, NY 14853, USA

^a e-mail: ag733@cornell.edu

Received: 8 October 2018
Received in final form: 10 February 2019
Published online: 3 July 2019

Abstract

Recent research on photocathodes for photoinjectors has focused on the understanding of the photoemission process at low energy (i.e. at photon energy close to the material’s work function) as well as on the study of ordered and innovative photocathode materials, with the aim of minimizing the emittance at the cathode. We here present a preliminary study on low energy photoemission from (100) oriented Ba_1−xLa_xSnO₃ thin films, characterizing their quantum efficiency and the mean transverse energy of the photoelectrons. The aim of the study is to pave the way for future experiments on innovative photocathodes based on perovkite oxides.