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TEMPERATURE-DEPENDENCE OF THE MIDINFRARED ABSORPTION IN LA1.84SR0.16NIO4+DELTA

被引：17
作者：
CRANDLES, DA
TIMUSK, T
GARRET, JD
GREEDAN, JE
机构：
[1] DEPT PHYS & ASTRON,HAMILTON L8S 4M1,ON,CANADA
[2] DEPT CHEM,HAMILTON L8S 4M1,ON,CANADA
[3] INST MAT RES,HAMILTON L8S 4M1,ON,CANADA
来源：
PHYSICA C | 1993年 / 216卷 / 1-2期
关键词：
D O I：
10.1016/0921-4534(93)90638-7
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The reflectance of a La1.84Sr0.16Ni4+delta crystal has been measured between 115 cm-1 and 5500 cm-1 with the electric-field vector in the ab-plane for several temperatures between 80 and 300 K. On the basis of the Kramers-Kronig derived optical conductivity data we show that it is unlikely that small-polaron absorption can account for the mid-infrared absorption, as had been previously suggested. A doped-semiconductor model is also considered.
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页码：94 / 98
页数：5
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