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...
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...
calculated band structure of 1T-NbSe2, where blue and red dots represent band projections of spin-down and spin-updz2orbitals of the center Nb atom (i.e., Nb1) in SOD, respectively. Right: corresponding partial density of states (PDOS) of Nb1dz2orbital. Calculations include spin polarizati...
Optical phonons and the soft mode in 2H-NbSe2. We present an investigation of the lattice dynamics of the charge density wave (CDW) compound 2H-NbSe2. We analyze the precise nature of the wav... Weber,F.,Hott,... - 《Physical Review B Condensed Matter & Materials Physics》 被引量: ...
1TNbSe2 is a d1 transition metal dichalcogenide, featuring a low-T13脳13 commensurate charge-density-wave (CCDW) phase with the formation of a star of David (SD) pattern. Here, we investigate the temperature dependence of the lattice and electronic structures of the 1TNbSe2 monolayer using ...
vanadium compounds/ NbSe 22H polytypeVSe 21T polytypeTEMzone axis pattern mapsbend contour patterns(0001) directionIn this paper we characterize a class of rooted trees having a given number of terminal vertices in each level of the tree and a given height. We also present two conditions ...
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...
Point cloud obtained from 3D scanning is often sparse, noisy, and irregular. To cope with these issues, recent studies have been separately conducted to densify, denoise, and complete inaccurate point cloud. In this paper, we advocate that jointly solving these tasks leads to significant improveme...
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)....
77Se NMR spectra of single-crystalline 2H-NbSe2 and 1T-VSe2 have been measured in the temperature range 7-295 K. For both compounds the NMR lineshape is strongly affected by the phase transition to the charge density wave (CDW) state at T0=31 K and 110 K, respectively. The temperature...