RESONANT RAMAN-STUDY ON CRYSTALLINE GESE2 IN RELATION TO AMORPHOUS STATES

被引：26

作者：

MATSUDA, O

INOUE, K

MURASE, K

机构：

[1] Department of Physics, Faculty of Science, Osaka University, Toyonaka, 560

来源：

SOLID STATE COMMUNICATIONS | 1990年 / 75卷 / 04期

关键词：

D O I：

10.1016/0038-1098(90)90901-M

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Raman spectra of single crystalline GeSe2 have been studied with various excitation photon energies from 2.0 to 2.8eV. In the most spectra, the intensity of the 211cm-1 band is dominant as usual. It is found that, by a 2.71eV(4579 A ̊) excitation in the c(a,a) c ̄ configuration, the 216cm-1 band becomes stronger than the 211cm-1 band. The change of the intensity ratio of the two bands is explained by a model of resonant effect between an exciton transition at about 2.7eV and the 216cm-1 vibrational excitation which is assigned to quasi-localized mode of edge-sharing Ge2Se 8 2 bitetrahedra. The crystalline 216cm-1 band is related to the A1 companion band at 216cm-1 in amorphous states. It is concluded that there is a medium range order of topologically layer-like crystalline fragments including the edge-sharing Ge2Se 8 2 bi-tetrahedra. © 1990.

引用

页码：303 / 308

页数：6

共 20 条

[11]

INOUE K, IN PRESS

[12] RAMAN AND IR STUDIES ON VIBRATIONAL PROPERTIES OF GE-SE GLASSES [J].

KUMAGAI, N ;

SHIRAFUJI, J ;

INUISHI, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1977, 42 (04) :1262-1268

[13] VIBRATIONAL PROPERTIES OF GLASSES - INTERMEDIATE RANGE ORDER [J].

LUCOVSKY, G ;

WONG, CK ;

POLLARD, WB .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1983, 59-6 (DEC) :839-846

[14]

Murase K., 1987, Disordered semiconductors, P297

[15] INVESTIGATION OF STABILITY OF (GE,SN)-(S, OR SE)4/2 CLUSTER BY VIBRATIONAL-SPECTRA [J].

MURASE, K ;

FUKUNAGA, T ;

YAKUSHIJI, K ;

YOSHIMI, T ;

YUNOKI, I .

JOURNAL OF NON-CRYSTALLINE SOLIDS, 1983, 59-6 (DEC) :883-886

[16]

MURASE K, 1986, MATER RES SOC S P, V61, P101

[17] CONFIGURATIONS OF A CHEMICALLY ORDERED CONTINUOUS RANDOM NETWORK TO DESCRIBE THE STRUCTURE OF GESE2 GLASS [J].

NEMANICH, RJ ;

GALEENER, FL ;

MIKKELSEN, JC ;

CONNELL, GAN ;

ETHERINGTON, G ;

WRIGHT, AC ;

SINCLAIR, RN .

PHYSICA B & C, 1983, 117 (MAR) :959-961

[18] OPTICAL-ABSORPTION BAND EDGE OF SINGLE-CRYSTAL BETA-GESE2 [J].

POPOVIC, ZV ;

BREITSCHWERDT, A .

PHYSICS LETTERS A, 1985, 110 (7-8) :426-428

[19] INFRARED AND RAMAN-SPECTRA OF GERMANIUM DICHALCOGENIDES .2. GESE2 [J].

POPOVIC, ZV ;

STOLZ, HJ .

PHYSICA STATUS SOLIDI B-BASIC RESEARCH, 1981, 108 (01) :153-163

[20] RAMAN-SCATTERING AND LOCAL ORDER IN GEXSE1-X GLASSES FOR 1/3 LESS-THAN-OR-EQUAL-TO X LESS-THAN-OR-EQUAL-TO 1/2 [J].

TRONC, P ;

BENSOUSSAN, M ;

BRENAC, A ;

ERRANDONEA, G ;

SEBENNE, C .

JOURNAL DE PHYSIQUE, 1977, 38 (12) :1493-1498

← 1 2 →