Soft X-ray emission and high-resolution photoemission study of quasi-two-dimensional superconductor NaxHfNCl

被引：6
|
作者：
Takeuchi, T
Tsuda, S
Yokoya, T
Tsukamoto, T
Shin, S
Hirai, A
Shamoto, S
Kajitani, T
机构：
[1] RIKEN, SPRING8, Soft Xray Spect Lab, Mikazuki, Hyogo 6795148, Japan
[2] Sci Univ Tokyo, Dept Appl Phys, Shinjuku Ku, Tokyo 1628601, Japan
[3] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
[4] Tohoku Univ, Dept Appl Phys, Sendai, Miyagi 9808579, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2003年 / 392卷
关键词：
photoemission; soft X-ray emission; electronic structure; layered nitride chloride superconductor;
D O I：
10.1016/S0921-4534(03)00752-4
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have performed soft X-ray emission (SXE) and high-resolution photoemission (PE) spectroscopy to study the electronic structures of beta-HfNCl and Na-intercalated HfNCl. Both the PE and SXE spectra of Na0.37HfNCl show an additional structure within the band gap of beta-HfNCl, without an apparent shift in the energy position of valence-band features. These results clearly reveal intercalant-induced changes in the electronic structure of the layered nitride chlorides. From these results, we propose non-rigid band like behavior for this system in contrast to generally expected rigid-band filling upon intercalation. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：127 / 129
页数：3
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