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arXiv 0811.0338cond-mat.str-el
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用X射线衍射观察电荷密度波态的压力诱导猝灭

Pressure-induced quenching of the charge-density-wave state observed by x-ray diffraction

A. Sacchetti, C. L. Condron, S. N. Gvasaliya, F. Pfuner, M. Lavagnini, M. Baldini, M. F. Toney, M. Merlini, M. Hanfland, J. Mesot, J. -H. Chu, I. R. Fisher, P. … 展开作者

A. Sacchetti, C. L. Condron, S. N. Gvasaliya, F. Pfuner, M. Lavagnini, M. Baldini, M. F. Toney, M. Merlini, M. Hanfland, J. Mesot, J. -H. Chu, I. R. Fisher, P. Postorino, L. Degiorgi

摘要:

报道了电荷密度波LaTe $_3$和CeTe $_3$化合物的X射线衍射研究。我们提取的晶格常数和CDW调制波矢量,并提供直接的证据,压力诱导淬火的CDW相。我们观察到晶格的化学压缩和机械压缩之间的细微差异。我们占这些情况下,在这些CDW系统中的有效维数是依赖于晶格压缩的类型,并有直接的影响费米面嵌套的程度和波动效应的强度。

英文摘要:

We report an x-ray diffraction study on the charge-density-wave (CDW) LaTe$_3$ and CeTe$_3$ compounds as a function of pressure. We extract the lattice constants and the CDW modulation wave-vector, and provide direct evidence for a pressure-induced quenching of the CDW phase. We observe subtle differences between the chemical and mechanical compression of the lattice. We account for these with a scenario where the effective dimensionality in these CDW systems is dependent on the type of lattice compression and has a direct impact on the degree of Fermi surface nesting and on the strength of fluctuation effects.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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