Optical reflection spectra of silicon clathrate compounds Ba8AgxSi46-x

被引：0
|
作者：
Nozue, Y [1 ]
Hosaka, G
Enishi, E
Yamanaka, S
机构：
[1] Tohoku Univ, Dept Phys, Grad Sch Sci, Sendai, Miyagi 9808578, Japan
[2] Hiroshima Univ, Fac Engn, Dept Appl Chem, Hiroshima 7398527, Japan
[3] Japan Sci & Technol Corp, CREST, Osaka, Japan
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2000年 / 341卷
关键词：
silicon clathrate; superconductivity; reflection spectrum;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Optical reflection spectra are measured for Ba8AgxSi46-x (0 less than or equal to x less than or equal to 6) at room temperature. A systematic decrease in the plasmon energy is found with increasing x, indicating that the carrier concentration decreases with increasing x. When x increases, the superconducting transition temperature T-c decreases. An origin of the decrease in T-c is assigned to the decrease in the density or states at the Fermi level due to the decrease in the carrier concentration.
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页码：1313 / 1318
页数：6
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