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arXiv 1901.03471cond-mat.str-el
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无序抑制CDW的长程序:Pd插层ErTe3的STM研究

Disorder Induced Suppression of CDW Long Range Order: STM Study of Pd-intercalated ErTe3

Alan Fang, Joshua A. W. Straquadine, Ian R. Fisher, Steven A. Kivelson, Aharon Kapitulnik

摘要:

研究了掺Pd的ErTe 3晶体的双向双组分电荷密度波(CDW)态与无序之间的相互作用。使用扫描隧道显微镜(STM),我们表明,引入Pd-嵌入物(即无序)破坏的长程序的两个CDW状态通过创建的位错,这似乎与每个CDW分别。而对于弱无序两个CDW状态继续在整个样品中共存,没有一个CDW方向或另一个的“域”,增加Pd浓度对二次CDW状态有更强的影响,表现在更高的位错密度。残留的两个不同的CDW阶段坚持插层水平远高于原来的相变的签名完全抑制。因此,这项研究提出了第一次看多个2D强耦合CDW状态的破坏的扩散的位错。

英文摘要:

Pd-intercalated ErTe3 is studied as a model system for the interplay between a bidirectional two component charge density wave (CDW) state and disorder. Using scanning tunneling microscopy (STM), we show that introducing Pd-intercalants (i.e. disorder) disrupts the long-range order of both CDW states via the creation of dislocations, which appear associated with each CDW separately. While for weak disorder both CDW states continue to coexist throughout the sample, with no "domains" of one CDW direction or another, increasing Pd concentration has a stronger effect on the secondary CDW state, manifested in higher density of dislocations. Vestiges of the two distinct CDW phases persist to intercalation levels much above where signatures of the original phase transition are totally suppressed. This study therefore presents a first look into the disruption of multiple 2D strong-coupling CDW states by the proliferation of dislocations.

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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