Hsu, DanielDanielHsuChen, Y. S.Y. S.ChenSong, M. Y.M. Y.SongChuang, C. H.C. H.ChuangMINN-TSONG LINWEN-FANG WU2020-03-312020-03-31201000036951https://scholars.lib.ntu.edu.tw/handle/123456789/481980https://www.scopus.com/inward/record.uri?eid=2-s2.0-75749106710&doi=10.1063%2f1.3299023&partnerID=40&md5=0be6e472fbd17269684fb142fd3f1136Electronic structures of strained Nd1-xCaxMnO 3 (NCMO) thin films with x=0 to 0.8 are investigated via x-ray absorption spectroscopy (XAS). The obtained O 1s spectra within the photon energy 529-535 eV can be decomposed into eg↑1, e g↑2, t2g↓, and eg↓ bands. Based on the assigned energy levels of these band states, the energies of magnetic exchange, crystal field and Jahn-Teller (JT) splitting are determined. Particularly, the JT splitting is around 0.8 eV, which is observed with O 1s XAS for the first time in NCMO thin films. © 2010 American Institute of Physics.[SDGs]SDG7Band state; Crystal fields; Energy level; Jahn-Teller; Magnetic exchange; O 1s XAS; Photon energy; Absorption; Calcium; Electronic structure; Manganese oxide; Neodymium; Thin films; X ray absorption; X ray absorption spectroscopy; Absorption spectroscopyjournal article10.1063/1.32990232-s2.0-75749106710WOS:000274179900031