2015年7月20日 · The CDW order in NbSe 2 is characterized by a three-component complex order parameter (j = 1, 2, 3), where |Δ| and φ are the CDW gap and phase, respectively 14.

2015年2月17日 · Here we investigate, using photoemission, X-ray scattering and scanning tunnelling microscopy, the canonical CDW compound 2 H -NbSe 2 intercalated with Mn and Co, and show that the conventional...

2022年1月14日 · In this paper, we present clear evidence of anisotropic superconductivity in NbSe 2 by measuring the tunneling density of states (DOS) with unprecedented resolution combined with state-of-the-art...

2018年4月13日 · Using first-principles calculations, we identify the ground state 3 × 3 CDW atomic structure of monolayer NbSe 2, which is characterized by the formation of triangular Nb clusters and shows a scanning tunnelling microscopy (STM) image and Raman CDW modes in good agreement with experiments.

Using first-principles calculations, we identify the ground state 3 × 3 CDW atomic structure of monolayer NbSe2, which is characterized by the formation of triangular Nb clusters and shows a scanning tunnelling microscopy (STM) image and Raman …

2016年9月16日 · In this work, we report first-principles density functional theory (DFT) results which provide a comprehensive description of the electronic structure of this system, bring some light into the long-debated mechanism of the CDW, report in depth calculations of the DOS near the Fermi level to discuss the surprising quasi-band gap feature reported ...

2013年7月8日 · We report the direct observation in real space of the charge density wave (CDW) phase transition in pristine 2H-NbSe2 using atomic-resolution scanning tunneling microscopy (STM). We find that static CDW order is established in nanoscale regions in the vicinity of defects at temperatures that are several times the bulk transition temperature Tcdw.

之前大家说cdw与超导是不共存的，超导相是没有cdw的，有cdw序的又不超导，后来做表面表征的人在单层二硒化铌nbse2上直接看到3×3的cdw，并且同时测得超导gap。直接gg。 但目前做块体超导材料一般还是会认为超导与cdw是竞争关系。这应该来自大量的实验观测经验。

2024年1月29日 · The charge density wave (CDW) state of 2 H − NbSe 2 features commensurate domains separated by domain boundaries accompanied by phase slips known as discommensurations. We have unambiguously visualized the structure of CDW domains using a displacement-field measurement algorithm on a scanning tunneling microscopy image.

2014年6月11日 · We report the direct observation in real space of the charge density wave (CDW) phase transition in pristine 2 H-NbSe 2 using atomic-resolution scanning tunneling microscopy. We find that static CDW order is established in nanoscale regions in the vicinity of defects at temperatures that are several times the bulk transition temperature T CDW .