THE ENERGY GAPS OF FULLERENE C-60 AND C-70 DETERMINED FROM THE TEMPERATURE-DEPENDENT MICROWAVE CONDUCTIVITY

被引：84

作者：

RABENAU, T ^{[1
]}

SIMON, A ^{[1
]}

KREMER, RK ^{[1
]}

SOHMEN, E ^{[1
]}

机构：

[1] KERNFORSCHUNGSZENTRUM KARLSRUHE GMBH, INST NUKL FESTKORPERPHYS, W-7500 KARLSRUHE 1, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1993年 / 90卷 / 01期

关键词：

D O I：

10.1007/BF01321034

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The dielectric constants epsilon=epsilon'+iepsilon'' of C60 and C70 powders have been measured in the temperature range from 150 K to 900 K using a microwave absorption method. From the temperature dependence of epsilon'' the ''electrical'' band gaps are found to be 1.86+/-0.1 eV for C60 and 1.57+/-0.1 eV for C70. Our method is not influenced by the possible generation of excitons. The results are discussed and related to theoretical predictions.

引用

页码：69 / 72

页数：4

共 23 条

[1] ORGANIC MOLECULAR SOFT FERROMAGNETISM IN A FULLERENE-C60 [J].

ALLEMAND, PM ;

KHEMANI, KC ;

KOCH, A ;

WUDL, F ;

HOLCZER, K ;

DONOVAN, S ;

GRUNER, G ;

THOMPSON, JD .

SCIENCE, 1991, 253 (5017) :301-303

[2] STRUCTURE AND PROPERTIES OF C70 [J].

BAKER, J ;

FOWLER, PW ;

LAZZERETTI, P ;

MALAGOLI, M ;

ZANASI, R .

CHEMICAL PHYSICS LETTERS, 1991, 184 (1-3) :182-186

[3] DETERMINATION OF SEMICONDUCTOR ENERGY GAPS USING THE MICROWAVE CAVITY PERTURBATION METHOD [J].

BAUHOFER, W .

JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS, 1981, 14 (08) :934-938

[4] 1ST-PRINCIPLES CALCULATION OF OPTICAL-PROPERTIES OF C60 IN THE FCC LATTICE [J].

CHING, WY ;

HUANG, MZ ;

XU, YN ;

HARTER, WG ;

CHAN, FT .

PHYSICAL REVIEW LETTERS, 1991, 67 (15) :2045-2048

[5]

FINK J, 1992, 1ST P IT WORKSH FULL

[6]

FINK J, 1991, P INT WORKSHOP ELECT

[7] ELECTRIC AND MAGNETIC-PROPERTIES OF THE AROMATIC 60-CARBON CAGE [J].

FOWLER, PW ;

LAZZERETTI, P ;

ZANASI, R .

CHEMICAL PHYSICS LETTERS, 1990, 165 (01) :79-86

[8] HIGH-RESOLUTION ELECTRON-ENERGY-LOSS SPECTROSCOPY OF THIN-FILMS OF C60 ON SI(100) [J].

GENSTERBLUM, G ;

PIREAUX, JJ ;

THIRY, PA ;

CAUDANO, R ;

VIGNERON, JP ;

LAMBIN, P ;

LUCAS, AA ;

KRATSCHMER, W .

PHYSICAL REVIEW LETTERS, 1991, 67 (16) :2171-2174

[9] CONDUCTING FILMS OF C60 AND C70 BY ALKALI-METAL DOPING [J].

HADDON, RC ;

HEBARD, AF ;

ROSSEINSKY, MJ ;

MURPHY, DW ;

DUCLOS, SJ ;

LYONS, KB ;

MILLER, B ;

ROSAMILIA, JM ;

FLEMING, RM ;

KORTAN, AR ;

GLARUM, SH ;

MAKHIJA, AV ;

MULLER, AJ ;

EICK, RH ;

ZAHURAK, SM ;

TYCKO, R ;

DABBAGH, G ;

THIEL, FA .

NATURE, 1991, 350 (6316) :320-322

[10] AN EELS STUDY OF FULLERITE - C-60-/C-70 [J].

HANSEN, PL ;

FALLON, PJ ;

KRATSCHMER, W .

CHEMICAL PHYSICS LETTERS, 1991, 181 (04) :367-372

← 1 2 3 →