2017年8月30日 · Atomic-resolution scanning transmission electron microscope imaging reveals the atomic structure of the intrinsic point defects and grain boundaries in monolayer NbSe 2, and confirms the low...

2015年11月9日 · In this work, we demonstrate very high in-plane upper critical fields induced by spin–momentum locking in superconducting monolayers of group-V TMD niobium diselenide (NbSe 2). This was achieved...

NbSe2材料减薄到单层极限时，可以获得二维Ising超导性，虽然面内上临界场显著提升，但超导转变温度却有所下降，仅有0.9-3.7K，也就是说单层NbSe2 Ising超导性的获得是以牺牲其他重要性质为代价的。

2023年5月18日 · Here, an alternative concept of NbSe2 crystal growth by the chemical vapor transport (CVT) technique using bromine as a vapor transport agent is presented and subsequently analyzed by X-ray diffraction (XRD), Raman and X-ray photoelectron spectroscopy (XPS) spectroscopy.

2023年11月9日 · By exploiting a magnetic field-induced transition in CrSBr from a state with zero magnetization to a state with finite magnetization, we can achieve controllable and reversible suppression of the...

2021年11月19日 · Monolayer group V transition metal dichalcogenides in their 1T phase have recently emerged as a platform to investigate rich phases of matter, such as spin liquid and ferromagnetism, resulting from strong electron correlations.

2022年10月1日 · In this paper, we conduct a study on a few-layer Nb 1+x Se 2 grown by MBE on SiO 2/Si substrates. A single crystal bulk 2H–NbSe2 sample grown by chemical vapor transport (CVT) was used as a reference. The MBE-grown material was characterized by X-ray photoelectron spectroscopy (XPS) and STM.

使用化学气相传输（CVT）技术合成二硒化铌（NbSe）晶体。 密度泛函理论（DFT）计算采用广义梯度近似（GGA）方法。 利用 Perdew-Burke-Ernzerhof (PBE) 赝势函数来强调 NbSe 六方 P6/mmc 对称结构晶相的结构、电学、弹性常数和光学特性。 此外，态密度 (DOS) 显示，在费米能级，Nb (3d) 态占主导地位，Se (5p) 和 Se (5 s) 态发挥次要作用。 能带结构证实了晶体的金 属性质，显示出导带和价带之间的重叠。

层状二维超导材料2H-NbSe 2用于构建范德华异质结构，其中可以在界面材料中感应出邻近耦合的超导顺序。 垂直堆叠的NbSe 2-石墨烯-NbSe 2是使用范德华层间耦合制造的，可产生无缺陷且具有高界面透明度的触点。 原子薄的石墨烯层允许在两个NbSe 2薄片之间形成高度相干的接近约瑟夫森耦合。 结临界电流的温度依赖性（I c）揭示了与理论预测相符的短而弹道的约瑟夫森耦合特征。 强大的约瑟夫森耦合可以通过1.6×10 4 A / cm 2的大结点临界电流密度，差分电导的亚隙结 …

2H-phase niobium diselenide (2H-NbSe2) is a superconducting vdW (Van der Waals) crystal with ch. rge density wave (CDW) and Weyl semimetal properties. It has a sup. rconducting critical temperature of ~7.8K and charge . si. y wave behavior at ~ has layered structure (lamellar) with weak interlayer coupl.