THEORETICAL-STUDY OF RAMAN MODES IN HIGH-PRESSURE PHASES OF SI, GE, AND SN

被引：25

作者：

LEWIS, SP ^{[1
]}

COHEN, ML ^{[1
]}

机构：

[1] LAWRENCE BERKELEY LAB,DIV MAT SCI,BERKELEY,CA 94720

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.48.3646

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Results of an ab initio investigation of the pressure-dependence of the Raman-active phonon modes in the beta-Sn phase of Si, Ge, and Sn and the hexagonal-close-packed phase of Si are presented. The calculations are in very good agreement with experimental measurements. Both measurements and calculations show that the beta-Sn structure LO mode has a different pressure dependence for Ge than for Si. This difference between Si and Ge is discussed, and an explanation in terms of d electrons is given.

引用

页码：3646 / 3653

页数：8

共 41 条

[1] RHOMBOHEDRAL TO SIMPLE-CUBIC PHASE-TRANSITION IN ARSENIC UNDER PRESSURE [J].

BEISTER, HJ ;

STROSSNER, K ;

SYASSEN, K .

PHYSICAL REVIEW B, 1990, 41 (09) :5535-5543

[2] GROUND-STATE OF THE ELECTRON-GAS BY A STOCHASTIC METHOD [J].

CEPERLEY, DM ;

ALDER, BJ .

PHYSICAL REVIEW LETTERS, 1980, 45 (07) :566-569

[3] 1ST-PRINCIPLES STUDY OF THE STRUCTURAL-PROPERTIES OF GE [J].

CHANG, KJ ;

COHEN, ML .

PHYSICAL REVIEW B, 1986, 34 (12) :8581-8590

[4] SOLID-SOLID PHASE-TRANSITIONS AND SOFT PHONON MODES IN HIGHLY CONDENSED SI [J].

CHANG, KJ ;

COHEN, ML .

PHYSICAL REVIEW B, 1985, 31 (12) :7819-7826

[5] SUPERCONDUCTIVITY IN HIGH-PRESSURE METALLIC PHASES OF SI [J].

CHANG, KJ ;

DACOROGNA, MM ;

COHEN, ML ;

MIGNOT, JM ;

CHOUTEAU, G ;

MARTINEZ, G .

PHYSICAL REVIEW LETTERS, 1985, 54 (21) :2375-2378

[6] STRUCTURAL AND ELECTRONIC-PROPERTIES OF THE HIGH-PRESSURE HEXAGONAL PHASES OF SI [J].

CHANG, KJ ;

COHEN, ML .

PHYSICAL REVIEW B, 1984, 30 (09) :5376-5378

[7] ELECTRON-PHONON INTERACTIONS AND SUPERCONDUCTIVITY IN SI, GE, AND SN [J].

CHANG, KJ ;

COHEN, ML .

PHYSICAL REVIEW B, 1986, 34 (07) :4552-4557

[8] SUPERCONDUCTIVITY IN ARSENIC AT HIGH-PRESSURES [J].

CHEN, AL ;

LEWIS, SP ;

SU, ZP ;

YU, PY ;

COHEN, ML .

PHYSICAL REVIEW B, 1992, 46 (09) :5523-5527

[9] 1ST-PRINCIPLES STUDY OF THE STRUCTURAL-PROPERTIES OF SN UNDER PRESSURE [J].

CHEONG, BH ;

CHANG, KJ .

PHYSICAL REVIEW B, 1991, 44 (09) :4103-4108

[10] THEORETICAL-STUDY OF SUPERCONDUCTIVITY IN HIGHLY CONDENSED SI [J].

COHEN, ML ;

CHANG, KJ ;

DACOROGNA, MM .

PHYSICA B & C, 1985, 135 (1-3) :229-234

← 1 2 3 4 5 →