1D金属MOF中电子驱动电荷密度波的证据
Evidence for an Electronically Driven Charge Density Wave in a 1D Metallic MOF.
摘要(中文译文)
电荷密度波（CDW）相是一种非常规量子态，常出现于低维金属体系中，并且本身与其他奇异现象共存。在多孔材料中发现此类态极为罕见。事实上，[Ln-(NO) ](HOTP)（Ln = La、Nd；HHOTP = 2,3,6,7,10,11-六羟基三亚苯；）是唯一一个基于结构调制而提出存在CDW态的多孔材料实例。然而，该调制是平庸的、因而本质上是纯结构性的，还是源于CDW、因而具有电子起源，仍不清楚。在此，低温和高压晶体学为一系列（Ln = La、Ce、Pr、Nd和Sm）MOF（包括最初的La和Nd材料）中CDW相的电子起源提供了证据。我们表明，该调制影响相邻HOTP配体的相对旋转，并且定义该调制的波矢大小对压力敏感。重要的是，该波矢在三分之一晶胞参数处表现出的公度锁定， = / ，为CDW相的能量稳定化提供了关键证据。
Abstract
Charge density wave (CDW) phases are unconventional quantum states that often arise in low-dimensional metallic systems and are themselves found alongside other exotic phenomena. Finding such states in porous materials is exceedingly rare. In fact, [Ln-(NO) ](HOTP) (Ln = La, Nd; HHOTP = 2,3,6,7,10,11-hexahydroxytriphenylene; ) is the only example of a porous material wherein a CDW state has been proposed on the basis of a structural modulation. However, whether the modulation is trivial, and thus purely structural in nature, or it stems from a CDW, and thus has electronic origin, remains unknown. Here, low-temperature and high-pressure crystallography provide evidence for an electronic origin of the CDW phase in a series of (Ln = La, Ce, Pr, Nd, and Sm) MOFs, including the original La and Nd materials. We show that the modulation affects the relative rotation of neighboring HOTP ligands, and that the magnitude of the wavevector that defines the modulation, , is sensitive to pressure. Importantly, the wavevector exhibits commensurability lock-in at one-third of the unit cell parameter, = / , providing key evidence for energetic stabilization of the CDW phase.
如何引用
AMA
Jewel Ryu, Lukas Sippach, Sebastian A Hallweger, Lukáš Palatinus, Peter Müller, Konstantin Glazyrin, et al. Evidence for an Electronically Driven Charge Density Wave in a 1D Metallic MOF.. ACS central science. 2026; doi:10.1021/acscentsci.6c00405.
APA
Jewel Ryu, Lukas Sippach, Sebastian A Hallweger, Lukáš Palatinus, Peter Müller, Konstantin Glazyrin, et al (2026). Evidence for an Electronically Driven Charge Density Wave in a 1D Metallic MOF.. ACS central science. https://doi.org/10.1021/acscentsci.6c00405
GB/T 7714
Jewel Ryu, Lukas Sippach, Sebastian A Hallweger, Lukáš Palatinus, Peter Müller, Konstantin Glazyrin, et al. Evidence for an Electronically Driven Charge Density Wave in a 1D Metallic MOF.[J]. ACS central science, 2026 doi:10.1021/acscentsci.6c00405.
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