OPTICAL PHONONS IN CD1-XZNXTE

被引：61

作者：

PERKOWITZ, S ^{[1
]}

KIM, LS ^{[1
]}

FENG, ZC ^{[1
]}

BECLA, P ^{[1
]}

机构：

[1] MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW B | 1990年 / 42卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.42.1455

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have combined infrared and Raman methods to study the transverse- and longitudinal-optical (TO and LO) phonons in bulk Cd1-xZnxTe (x=0.0051), for the first time at temperatures as low as 20 K. The samples were grown by the two-zone Bridgman method. We confirm that, within a two-mode model, both the CdTe- and ZnTe-like TO-mode frequencies increase with x, unlike any other II-VI ternary compound with known phonon modes, and unlike a recent report for Cd1-xZnxTe films grown on GaAs by molecular-beam epitaxy. The ZnTe-like TO frequency at very low x is near the prediction from impurity-mode theory. The infrared spectra show signs of clustering behavior like that seen in Hg1-xCdxTe. © 1990 The American Physical Society.

引用

页码：1455 / 1457

页数：3

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