Transport and optical properties of FeSi

被引：9

作者：

Degiorgi, L. ^{[1
]}

Hunt, M. ^{[1
]}

Ott, H. R. ^{[1
]}

Fisk, Z. ^{[2
]}

机构：

[1] ETH, Festkorperphys Lab, CH-8093 Zurich, Switzerland

[2] Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

来源：

PHYSICA B-CONDENSED MATTER | 1995年 / 206卷

关键词：

D O I：

10.1016/0921-4526(94)00592-J

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have investigated the electrodynamic response of the cubic compound FeSi, including sigma(DC)(T) and the optical reflectivity as a function of temperature over a very large frequency range, extending from the far infrared regime up to the ultraviolet spectral range. By lowering the temperature a gap excitation at about 800 cm 1 and several absorption peaks were found. Moreover, the spectral weight lost below the gap reappears just above it and is not distributed over an energy range of order eV, as suggested in previous work.

引用

页码：810 / 812

页数：3

共 7 条

[1]

Aeppli G., 1992, COMMENTS COND MAT PH, V16, P155

[2]

Degiorgi L., EUROPHYS LE IN PRESS

[3] ELECTRONIC-STRUCTURE AND OPTICAL-PROPERTIES OF FESI, A STRONGLY CORRELATED INSULATOR [J].

FU, C ;

KRIJN, MPCM ;

DONIACH, S .

PHYSICAL REVIEW B, 1994, 49 (03) :2219-2222

[4]

Hunt M.B., PHYS REV B IN PRESS

[5] PARAMAGNETIC EXCITED STATE OF FESI [J].

JACCARINO, V ;

WERTHEIM, GK ;

WERNICK, JH ;

WALKER, LR ;

ARAJS, S .

PHYSICAL REVIEW, 1967, 160 (03) :476-+

[6] BAND-STRUCTURE AND SEMICONDUCTING PROPERTIES OF FESI [J].

MATTHEISS, LF ;

HAMANN, DR .

PHYSICAL REVIEW B, 1993, 47 (20) :13114-13119

[7] UNCONVENTIONAL CHARGE GAP FORMATION IN FESI [J].

SCHLESINGER, Z ;

FISK, Z ;

ZHANG, HT ;

MAPLE, MB ;

DITUSA, JF ;

AEPPLI, G .

PHYSICAL REVIEW LETTERS, 1993, 71 (11) :1748-1751

← 1 →