Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
Initialising ...
小林 正起*; 石田 行章*; Hwang, J. I.*; Song, G. S.*; 藤森 淳; Yang, C. S.*; Lee, L.*; Lin, H.-J.*; Huang, D.-J.*; Chen, C. T.*; et al.
New Journal of Physics (Internet), 10, p.055011_1 - 055011_15, 2008/05
被引用回数:15 パーセンタイル:64.38(Physics, Multidisciplinary)The electronic structure of the Cr ions in the diluted ferromagnetic semiconductor ZnCrTe (=0.03 and 0.15) thin films has been investigated using X-ray magnetic circular dichroism (XMCD) and photoemission spectroscopy (PES). The line shape of the Cr XMCD spectra is independent of , , and , indicating that the ferromagnetism is originated from the same electronic states of the Cr ion. Cluster-model analysis indicates that the ferromagnetic XMCD signal is originated from Cr ions substituted for the Zn site. The Cr partial density of states extracted using Cr resonant PES shows a broad feature near the top of the valence band, suggesting strong ,- hybridization. Based on these findings, we conclude that double exchange mechanism cannot explain the ferromagnetism in ZnCrTe.