有鉴于此,近日,北京理工大学刘立巍副教授等利用扫描隧道显微镜/光谱学研究单层1T-NbSe2来阐明莫特上层哈伯德能带(UHB)的能量,并揭示出自旋极化的UHB在空间上的分布远离CDW单元中心的dz2轨道。此外,除了通常观察到的CDW图案外,UHB还显示出√3×√3R30°周期性。此外,在莫特间隙深处可以看到类似于CDW有序的图案,显示...
In contrast with 2H-NbSe2, monolayer 1T-NbSe2 was found to be a Mott insulator, with an energy gap of 0.4 eV. We also found that the insulating 1T and metallic 2H phases can be selectively fabricated by simply controlling the substrate temperature during epitaxy. The present results open a...
As a cousin of 1T-TaS2, 1T-NbSe2 has rarely been reported experimentally either in bulk or in a monolayer, because its favorable form is the 2H phase rather than the 1T phase33. Recently, some studies have reported the local induction of a 1T patch using the tip pulse34 or crash35 on...
S. F MeyerR. E HowardG. R StewartJuana Vivó AcrivosT. H GeballeMeyer, S. F., Howard, R. E., Stewart, G. R., Acrivos, J. V. & Geballe, T. H. Properties of intercalated 2H-NbSe2, 4Hb-TaS2 and 1T-TaS2. J. Chem. Phys. 62, 4411-4419 (1975)....
The layered compounds 2H‐NbSe2, 4Hb‐TaS2, and 1T‐TaS2have been intercalated with organic molecules; and the resulting crystal structure, heat capacity, conductivity, and superconductivity have been studied. The coordination in the disulfide layers was found to be unchanged in...
In contrast with 2H-NbSe2, monolayer 1T-NbSe2 was found to be a Mott insulator, with an energy gap of 0.4 eV. We also found that the insulating 1T and metallic 2H phases can be selectively fabricated by simply controlling the substrate temperature during epitaxy. The present results open a...