2021年11月19日 · To demonstrate the electron correlation resulted magnetic property, we create a vertical 1T/2H NbSe 2 heterostructure, and we find unambiguous evidence of exchange interactions between the localized magnetic moments in 1T phase and the metallic/superconducting phase exemplified by Kondo resonances …

Niobium diselenide or niobium (IV) selenide is a layered transition metal dichalcogenide with formula NbSe2. Niobium diselenide is a lubricant, and a superconductor at temperatures below 7.2 K that exhibit a charge density wave (CDW).

2020年3月13日 · Our results support the observation of phase separation between triangular and stripe phases in 1H-NbSe2, relating the stripe phase to compressive isotropic strain, favouring the 4 × 4 modulation.

2015年11月9日 · Here we report the observation of superconducting monolayer NbSe 2 with an in-plane upper critical field of more than six times the Pauli paramagnetic limit, by means of magnetotransport...

2015年7月20日 · Enhanced electron–phonon interactions in mono- and few-layer NbSe2 result in a significantly increased transition temperature of charge density waves compared with values in the bulk.

Different 1T-CDW intensities suggest interlayer interactions to be present in 1T-NbSe 2. Furthermore, a distinct voltage dependence suggests a complex CDW mechanism that does not just rely on a star-of-David reconstruction as in the case of other 1T-TMDs.

2025年1月15日 · In this work, we present the first direct experimental evidence of such a phase in 1H-NbSe 2. We develop a novel method to extract the inter-orbital correlation functions from the local spectral function probed by scanning tunneling microscopy (STM), leveraging the orbital wave functions obtained from ab initio calculations.

在这里，我们提出了一种一锅两步分子束横向外延方法，并成功合成了原子定义明确的 1T-VSe2─1H-NbSe2 横向异质结构。 我们展示了无缺陷横向异质结构的形成，并通过使用扫描隧道显微镜和光谱学以及密度泛函理论计算来表征它们的电子结构。

2024年3月16日 · 为了研究杂质原子掺杂所引发的效应，作者计算了NaNbX2和1H-MoX2的电子结构和声子色散，NaNbSe2的晶体结构如图3b图所示，接着从图3a，b的电子结构和声子色散可以看出没有虚频，表明Na插入后结构依然稳定。

Using Density Functional Calculations, we establish a common framework to define the key characteristics of both free-standing 1T-NbSe 2 and 1H-NbSe 2. We then identify the optimal stacking arrangement for these two layers, revealing a transfer from the 1T to the 1H phase and a reorganization of charge within each layer.