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Direct determination of symmetry of Cr ions in semi‐insulating GaAs substrates through anisotropic ballistic‐phonon propagation and attenuation

 

作者: V. Narayanamurti,   M. A. Chin,   R. A. Logan,  

 

期刊: Applied Physics Letters  （AIP Available online 1978）
卷期: Volume 33, issue 6  

页码: 481-483

 

ISSN:0003-6951

 

年代: 1978

 

DOI:10.1063/1.90432

 

出版商: AIP

 

数据来源: AIP

 

摘要:

We report ballistic phonon experiments in semi‐insulating GaAs as a function of polarization and propagation direction and of the concentration of chromium in the crystal. The data provide direct evidence for a tetragonally distorted site symmetry of the Cr ions and a ground‐state splitting at ∼14 K.

 

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