Optical properties of LaTe2 and CeTe2

被引：16

作者：

Jung, MH

Kwon, YS

Kinoshita, T

Kimura, S

机构：

[1] SUNGKYUNKWAN UNIV, DEPT PHYS, SUWON 440746, SOUTH KOREA

[2] INST MOL SCI, OKAZAKI, AICHI 444, JAPAN

来源：

PHYSICA B | 1997年 / 230卷

关键词：

CeTe2; LaTe2; optical conductivity; low carrier concentration system;

D O I：

10.1016/S0921-4526(96)00575-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The reflectivity spectra for the single crystals of LaTe2 and CeTe2 are measured at several temperatures in the photon energy range from 2 meV to 10.78 eV. The optical conductivity spectra are obtained by the Kramers-Kronig transformation of the reflectivity spectra. The majority of structures in these spectra seem to be due to the optical interband transitions from the valence p-band to the conduction 5d-bands. The 5d-band is expected to be splitted into several bands through the strong crystal field. The two peaks observed at about 2 and 5.8 eV in CeTe, seem to be due to the transitions from the occupied 4f-state to the 5d-bands. The 4f level is thought to be about 1 eV below the Fermi level.

引用

页码：151 / 154

页数：4