  We have performed in-situ angle-resolved photoemission spectroscopy on the
electron doped cuprate superconductor La2-xCexCuO4 (x = 0.1) using high-quality
films grown by molecular beam epitaxy. The obtained photoemission spectra were
free from dirt peaks. In addition, the time evolution of the spectra due to
impurity adsorption is rather gradual, and the sample surface is stable even at
ambient temperature, which is in contrast with previous reports on bulk
Nd2-xCexCuO4 (NCCO) single crystals. The energy distribution curves show clear
dispersions near the Fermi energy (EF) with some EF crossings. The resultant
Fermi surface is hole-like and centered around (pi, pi), which essentially
agrees with that predicted for NCCO by band calculations and also with the
experimentally determined Fermi surface of optimally doped NCCO (x = 0.15).
