Insulating state of ultrathin epitaxial LaNiO3thin films detected by hard x-ray photoemission (Insulating state of ultrathin epitaxial LaNiO3thin films detected by hard x-ray photoemission)
A. X. Gray, A. Janotti, J. Son, J. M. LeBeau, S. Ueda, Y. Yamashita, K. Kobayashi, A. M. Kaiser, R. Sutarto, H. Wadati, G. A. Sawatzky, C. G. Van de Walle, S. Stemmer, C. S. Fadley.