Investigation of the unoccupied states in Sr2YRuO6 single crystals doped with Cu

C. L. Chen, S. M. Rao, K. J. Wang, F. C. Hsu, Y. C. Lee, C. L. Dong, T. S. Chan, J. F. Lee, M. C. Ling, H. L. Liu, M. K. Wu

研究成果: 雜誌貢獻文章

6 引文 斯高帕斯(Scopus)

摘要

The electronic structure single crystals of the new double perovskite Sr2YRu1-xCuxO6 (x = 0-0.05) has been investigated by x-ray absorption nearedge structure (XANES) spectroscopy. The Cu K-edge spectra show that Cu is incorporated as Cu1+ and Cu 2+ in the crystals grown in air and in an oxygen atmosphere and Ru5+ is seen in the Ru K-edge spectra. The O K-edge and the Ru L 3-edge spectra indicate an increase in the unoccupied states (hole concentration) as x is increased, accompanied by a lattice distortion from an increased O-Ru-O bond angle. These changes observed even with a small Cu addition are interpreted to result from the Cu 3d-O 2p hybridization as Cu replaces Ru in the octahedral sites.

原文英語
文章編號073024
期刊New Journal of Physics
11
DOIs
出版狀態已發佈 - 2009 七月 9

ASJC Scopus subject areas

  • Physics and Astronomy(all)

指紋 深入研究「Investigation of the unoccupied states in Sr<sub>2</sub>YRuO<sub>6</sub> single crystals doped with Cu」主題。共同形成了獨特的指紋。

  • 引用此

    Chen, C. L., Rao, S. M., Wang, K. J., Hsu, F. C., Lee, Y. C., Dong, C. L., Chan, T. S., Lee, J. F., Ling, M. C., Liu, H. L., & Wu, M. K. (2009). Investigation of the unoccupied states in Sr2YRuO6 single crystals doped with Cu. New Journal of Physics, 11, [073024]. https://doi.org/10.1088/1367-2630/11/7/073024