OPTICAL EVIDENCE OF ANDERSON-MOTT LOCALIZATION IN FESI

被引：64

作者：

DEGIORGI, L

HUNT, MB

OTT, HR

DRESSEL, M

FEENSTRA, BJ

GRUNER, G

FISK, Z

CANFIELD, PC

机构：

[1] UNIV CALIF LOS ANGELES, DEPT PHYS, LOS ANGELES, CA 90024 USA

[2] UNIV CALIF LOS ANGELES, CTR SOLID STATE SCI, LOS ANGELES, CA 90024 USA

[3] LOS ALAMOS NATL LAB, DIV MAT SCI & TECHNOL, LOS ALAMOS, NM 87545 USA

来源：

EUROPHYSICS LETTERS | 1994年 / 28卷 / 05期

关键词：

D O I：

10.1209/0295-5075/28/5/008

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have investigated the electrodynamic response of single-crystalline FeSi over a frequency range from d.c. to 10(5) cm-1. At low frequencies, we found evidence for an Anderson-Mott localization behaviour of the low-temperature optical conductivity, while at high frequencies the excitation spectrum resembles that of a conventional semiconductor. The missing spectral weight below the gap energy is redistributed around the gap edge, in disagreement with previous claims based on optical measurements.

引用

页码：341 / 346

页数：6

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