Detection of surface acoustic waves by scanning tunneling microscopy
Detection of surface acoustic waves by scanning tunneling microscopy
复制标题
通过扫描隧道显微镜检测表面声波
DOI：
10.1007/bf00324777
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发表时间：
1991
期刊：
影响因子：
--
通讯作者：
J. Riedel
中科院分区：
文献类型：
--
作者：
W. Rohrbeck;E. Chilla;H. Fröhlich;J. Riedel
提出了一种基于扫描隧道显微镜的研究固体表面超声波的新方法。将正弦高频信号添加到尖端电压。因此，隧穿电流包含其频率是声波场和交流尖端电压的频率之差的分量。该分量的振幅和相位携带关于波场的全部信息。
A new method for the investigation of ultrasonic waves on surfaces of solids based on scanning tunneling microscopy is presented. A sinusoidal high frequency signal is added to the tip voltage. Hence the tunneling current contains a component whose frequency is the difference of the frequencies of the acoustic wave field and the ac tip voltage. Amplitude and phase of this component carry the full information about the wave field.