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arXiv 0711.2160cond-mat.str-elcond-mat.supr-con
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Ca1 .5Sr0.5RuO4三维体电子结构的软X射线角分辨光电子能谱研究

Three-Dimensional Bulk Electronic Structures of Ca1.5Sr0.5RuO4 Studied by Soft X-ray Angle-Resolved Photoemission

M. Uruma, A. Sekiyama, H. Fujiwara, M. Yano, H. Fujita, S. Imada, T. Muro, I. A. Nekrasov, Y. Maeno, S. Suga

摘要:

我们报告的实验数据的三维体费米面的层状强关联Ca 1.5Sr 0.5RuO4系统。测量是用依赖于铪的体敏软X射线角分辨光电发射技术进行的。我们的实验数据表明,在kz~0的体费米表面拓扑是定性不同的表面敏感的低能ARPES观察。此外,更强的kz色散的圆形伽马费米面片观察相比,Sr 2 RuO 4。在顺磁性金属相中,Ca_(1.5)Sr_(0.5)RuO_4化合物具有较好的三维电子结构。

英文摘要:

We report on experimental data of the three-dimensional bulk Fermi surfaces of the layered strongly correlated Ca1.5Sr0.5RuO4 system. The measurements have been performed by means of hn-depndent bulk-sensitive soft x-ray angle-resolved photoemission technique. Our experimental data evinces the bulk Fermi surface topology at kz~0 to be qualitatively different from the one observed by surface-sensitive low-energy ARPES. Furthermore, stronger kz dispersion of the circle-like gamma Fermi surface sheet is observed compared with Sr2RuO4. Thus in the paramagnetic metal phase, Ca1.5Sr0.5RuO4 compound is found to have rather three-dimensional electronic structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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