Temperature and substitution dependence of the photoemission spectra of FeSi

被引：18

作者：

Susaki, T ^{[1
]}

Mizokawa, T

Fujimori, A

Ohno, A

Tonogai, T

Takagi, H

机构：

[1] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

[2] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 1068666, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.58.1197

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the effect of varying temperature and Co substitution on the low-energy electronic structure of FeSi by photoemission spectroscopy. We have observed that the density of states (DOS) of FeSi is reduced at low temperatures over a wide energy range of similar to 50 meV below the Fermi level (E-F), which is the energy scale observed by the magnetic, transport and optical measurements. The reduced DOS is completely recovered with increasing temperature but only partly, i.e., predominantly near E-F, With Co substitution, again consistent with the transport properties. [S0163-1829(98)00428-7].

引用

页码：1197 / 1200

页数：4

共 22 条

[1]

Aeppli G., 1992, Comments Condens. Matter Phys., V16, P155

[2] EFFECTS OF HYDROSTATIC-PRESSURE ON MAGNETIC-PROPERTIES OF DISORDERED MONOSILICIDE FECHICO1-CHISI ALLOYS [J].

BEILLE, J ;

BLOCH, D ;

JACCARINO, V ;

WERNICK, JH ;

WERTHEIM, GK .

JOURNAL DE PHYSIQUE, 1977, 38 (03) :339-343

[3] Observation of a gap opening in FeSi with photoelectron spectroscopy [J].

Breuer, K ;

Messerli, S ;

Purdie, D ;

Garnier, M ;

Hengsberger, M ;

Baer, Y ;

Mihalik, M .

PHYSICAL REVIEW B, 1997, 56 (12) :R7061-R7064

[4] Electronic band structure of epsilon-FeSi(100) [J].

Castro, GR ;

Alvarez, J ;

Davila, ME ;

Asensio, MC ;

Michel, EG .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1997, 9 (08) :1871-1876

[5] HIGH-RESOLUTION TEMPERATURE-DEPENDENT PHOTOEMISSION SPECTROSCOPY OF FESI - EVIDENCE FOR LOCALIZED STATES [J].

CHAINANI, A ;

YOKOYA, T ;

MORIMOTO, T ;

TAKAHASHI, T ;

YOSHII, S ;

KASAYA, M .

PHYSICAL REVIEW B, 1994, 50 (12) :8915-8917

[6] Low-temperature transport, optical, magnetic and thermodynamic properties of Fe1-xCoxSi [J].

Chernikov, MA ;

Degiorgi, L ;

Felder, E ;

Paschen, S ;

Bianchi, AD ;

Ott, HR ;

Sarrao, JL ;

Fisk, Z ;

Mandrus, D .

PHYSICAL REVIEW B, 1997, 56 (03) :1366-1375

[7] Infrared spectroscopic study of phonons coupled to charge excitations in FeSi [J].

Damascelli, A ;

Schulte, K ;

vanderMarel, D ;

Menovsky, AA .

PHYSICAL REVIEW B, 1997, 55 (08) :R4863-R4866

[8] OPTICAL EVIDENCE OF ANDERSON-MOTT LOCALIZATION IN FESI [J].

DEGIORGI, L ;

HUNT, MB ;

OTT, HR ;

DRESSEL, M ;

FEENSTRA, BJ ;

GRUNER, G ;

FISK, Z ;

CANFIELD, PC .

EUROPHYSICS LETTERS, 1994, 28 (05) :341-346

[9] 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

[10] Photoemission above the Fermi level: The top of the minority d band in nickel [J].

Greber, T ;

Kreutz, TJ ;

Osterwalder, J .

PHYSICAL REVIEW LETTERS, 1997, 79 (22) :4465-4468

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