PRONOUNCED PHONON SOFTENING IN THE FAR INFRARED-SPECTRA OF YBA2(CU1-XZNX)3O7

被引：24

作者：

GAJIC, R ^{[1
]}

SCHUTZMANN, J ^{[1
]}

BETZ, J ^{[1
]}

ZETTERER, T ^{[1
]}

OTTO, HH ^{[1
]}

OBERMAYER, PE ^{[1
]}

RENK, KF ^{[1
]}

机构：

[1] UNIV REGENSBURG, INST ANGEW PHYS, W-8400 REGENSBURG, GERMANY

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 78卷 / 01期

关键词：

D O I：

10.1016/0038-1098(91)90810-I

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report on measurements of the FAR-IR reflection spectra of the YBa2(Cu1-xZnx)3O7-y (y congruent-to 0) ceramics for different Zn concentrations (x = 0.01, 0.03 and 0.5) and temperatures. All spectra show a pronounced phonon softening of the 291 cm-1 mode for cooling of the samples from 300 to 10 K. The largest frequency shift of 12 cm-1 is observed for x = 0.01. We attribute this increase of the phonon softening to the suppression of screening caused by Zn doping.

引用

页码：65 / 68

页数：4

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