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arXiv 1302.6449cond-mat.str-elcond-mat.supr-con
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1 T- TaS2中电荷密度波的压力依赖性及其与超导电性的关系

Pressure dependence of the charge density wave in 1T-TaS2 and its relation to superconductivity

T. Ritschel, J. Trinckauf, G. Garbarino, M. Hanfland, M. v. Zimmermann, H. Berger, B. Buechner, J. Geck

摘要:

我们提出了一个国家的最先进的X射线衍射研究的电荷密度波阶在1 T-TaS 2作为温度和压力的函数。我们的结果证明,电荷密度波,我们描述的波矢,振幅和相干长度,确实存在于超导区的相图。这些数据进一步表明,有序的电荷密度波结构作为一个整体,在低温下成为超导,即。即在实空间中宏观尺度上超导性与电荷密度波共存。这一结果从根本上不同于先前提出的超导和绝缘区域在真实空间中的分离,而是提供了超导和电荷密度波隙存在于互易空间的分离区域中的证据。

英文摘要:

We present a state-of-the-art x-ray diffraction study of the charge density wave order in 1T-TaS2 as a function of temperature and pressure. Our results prove that the charge density wave, which we characterize in terms of wave vector, amplitude and the coherence length, indeed exists in the superconducting region of the phase diagram. The data further imply that the ordered charge density wave structure as a whole becomes superconducting at low temperatures, i. e, superconductivity and charge density wave coexist on a macroscopic scale in real space. This result is fundamentally different from a previously proposed separation of superconducting and insulating regions in real space and, instead, provides evidence that the superconducting and the charge density wave gap exist in separate regions of reciprocal space.

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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