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TY - CONF AU - Galdi, A. AU - Adhikari, G. AU - Bazarov, I.V. AU - Cultrera, L. AU - Li, W. H. AU - Lochocki, E. B. AU - Maxson, J.M. AU - Paik, H. AU - Parzyck, C.T. AU - Pierce, C. M. AU - Schlom, D. G. AU - Schroeder, W.A. AU - Shen, K.M. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Barium Tin Oxide Ordered Photocathodes: First Measurements and Future Perspectives J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - Single crystalline photocathodes with small electron effective mass are supposed to enable ultra-low emittance beams, by taking advantage of the conservation of transverse (crystal) momentum. We present a preliminary study on photoemission from epitaxial films of La-doped BaSnO₃ with (100) orientation. We demonstrate here the possibility of generating and characterizing electron beams by exciting photoelectrons solely from the conduction band. We report quantum efficiency and mean transverse energy meaurements as a function of photon energy from the bare and Cs-activated La-doped BaSnO₃ surface. PB - JACoW Publishing CP - Geneva, Switzerland SP - 1597 EP - 1600 KW - electron KW - photon KW - cathode KW - laser KW - emittance DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-TUPML027 UR - http://jacow.org/ipac2018/papers/tupml027.pdf ER -