Polarized lifetime-broadening-suppressed XANES study of La_2−xSr_xCuO₄

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• 作者：Hisashi Hayashi ; Tomofumi Azumi ; Atsushi Sato ; Rumi Takeda ; Masaki Kawata ; Yasuo Udagawa ; Naomi Kawamura ; Kazuyoshi Yamada and Kazuhiko Ikeuchi
• 刊名：Radiation Physics and Chemistry
• 出版年：2006
• 期刊代码：68_0969806x
• 类别：ph
• 出版时间：November 2006
• 卷：75
• 期：11
• 页码：1586-1590
• 文件大小：229 K

摘要

Lifetime-broadening-suppressed X-ray absorption near-edge structures (LBS-XANES) spectra, where the resolution is not restricted by core-hole lifetime widths, have been measured at the Cu K-edge on the prototypical high-T_c La_2−xSr_xCuO₄ (x=0, 0.15, and 0.29) single crystals. Thanks to improved resolution, 1s-3d excitation bands have been clearly separated from the main transitions and their concentration as well as polarization dependences are examined.