TEMPERATURE EFFECTS IN PHONON-DISPERSION OF SMB6 INTERMEDIATE VALENCE SEMICONDUCTOR

被引：13

作者：

ALEKSEEV, PA ^{[1
]}

IVANOV, AS ^{[1
]}

LAZUKOV, VN ^{[1
]}

SADIKOV, IP ^{[1
]}

SEVERING, A ^{[1
]}

机构：

[1] INST MAX VON LAUE PAUL LANGEVIN,F-38042 GRENOBLE,FRANCE

来源：

PHYSICA B | 1992年 / 180卷

关键词：

D O I：

10.1016/0921-4526(92)90734-A

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Temperature dependence of previously discovered anomalies in SmB6 acoustic and low-lying optic phonon branches was investigated on three-axis and time-of-flight spectrometers. The largest changes in phonon frequencies with respect to the room temperature data were found for longitudinal branches while all transverse phonons hardened slightly. The unusual nature of the previously observed dispersionless mode in the energy gap between acoustic and optic phonons was confirmed. Some new peculiarities of the SmB6 excitation spectra were obtained at low temperature.

引用

页码：281 / 283

页数：3

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