Measurement of the phason dispersion of misfit dislocations on the Au(111) surface.
Measurement of the phason dispersion of misfit dislocations on the Au(111) surface.
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Au(111) 表面失配位错的相子色散测量。
DOI：
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发表时间：
2013
影响因子：
8.6
通讯作者：
W. Allison
中科院分区：
文献类型：
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作者：
E. M. McIntosh;P. R. Kole;M. El;David Chisnall;J. Ellis;W. Allison
本文报道了在金的重构（111）面上测量与部分位错晶格有关的声、光相位子色散曲线。我们的测量这些低能量（<0.5 meV）的弱色散模式已使非常高的分辨率的新氦自旋回波技术。这里提出的结果构成了第一次测量的相位子色散的失配位错，并可能与任何类型的晶体位错的激发。
We report measurements of the acoustic and optical phason dispersion curves associated with the lattice of partial dislocations on the reconstructed (111) surface of gold. Our measurements of these low energy (<0.5 meV) weakly dispersive modes have been enabled by the very high resolution of the novel helium spin-echo technique. The results presented here constitute the first measurement of the phason dispersion of misfit dislocations, and possibly of excitations associated with any type of crystalline dislocations.