2021年12月16日 · By using scanning tunnelling microscopy (STM), we demonstrate that at small twist angles, the moiré pattern traps the CDW domain in the 1T-TiTe 2 monolayer and substantially enhances its...

2012年12月1日 · Scanning tunneling microscopy (STM) and X-ray photoelectron diffraction (XPD) are applied to study the surface of layered dichalcogenide 1 T -TiSe 2.

2024年1月3日 · We reinvestigate the representative but debated chiral CDW of TiSe 2 using scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. Our STM data reveal unambiguously the chiral distortion of the topmost Se layer in domains of opposite chirality, which are interfaced with a novel domain wall.

2021年1月22日 · Transport data on Pt substituted for Ti in 1T-TiSe2 shows a dramatic increase of resistivity by five orders of magnitude for few % of Pt substitution, with a power-law dependence of the ...

2024年10月29日 · Here, we clarify the atomic/electronic structure of DWs of the chiral CDW emerging in 1 T -TiSe 2, using scanning tunneling microscopy and density functional calculations. We reveal unambiguously the microscopic origin of chiral CDW as the C 2 distortion in Se layers and its interlayer coupling.

2022年1月10日 · Here, we report an incommensurate superstructure in monolayer $ {\mathrm {TiSe}}_ {2}/\mathrm {CuSe}/\mathrm {Cu} (111)$ heterostructure.

2024年12月31日 · 近日，北京大学Yan Zhang研究小组利用 角分辨光电子能谱 （ARPES）和 碱金属沉积 技术，成功测量了1T-TiSe₂中导带（CB）随温度变化的详细特性。 通过在样品表面沉积碱金属原子，引入额外电子，使得CB下降至费米能级之下，从而实现了对其的直接观测。 相关成果发表在Nature Communications上。 研究背景. 1T-TiSe₂是一种强有力的候选材料，用于实现 激子玻色-爱因斯坦凝聚 （BEC），广泛应用于量子材料和电子器件等领域。 作为一种典型的过 …

2010年6月1日 · We report the chirality of charge density waves (CDW) in 1T-TiSe 2 by using scanning tunneling microscopy (STM) measurements. We found that the CDW intensity becomes Ia 1: Ia 2: Ia 3 = 1: 0.7 ± 0.1: 0.5 ± 0.1, where Ia i (i = 1, 2, 3) is the amplitude of the tunneling current contributed by the CDWs.

2018年4月15日 · By using scanning tunneling microscopy (STM)/spectroscopy (STS), we systematically characterize the electronic structure of lightly doped 1T-TiSe 2, and demonstrate the existence of the electronic inhomogeneity and the pseudogap state. It is found that the intercalation induced lattice distortion impacts the local band structure and reduce the ...

通过扫描隧道显微镜（STM）研究，他们发现了莫尔增强的电荷密度波态（charge density wave, CDW），为该领域国际创新突破。 这项工作不仅攻克了利用外延方法调控范德华转角自由度的难题，同时也开启了在1T相过渡金属硫族化物的转角体系中探索奇异物性的新篇章。