拉曼光谱（激光拉曼光谱）和 红外光谱 都是研究分子的振动和转动 能级跃迁 的分子光谱。 研究表明，红外光作用下的振动中，只有振动前后 偶极矩 （ D）发生变化了的振动才会产生红外吸 …

In this work, we show an obvious evidence of nondestructive Raman spectra for the structural transition, i.e., the existence of a charge density wave (CDW) in monolayer 2H-TaS2, which can exhibit...

2022年7月25日 · In this work the characterization of the Raman spectrum, specifically of the E2g1\ [_ { {\bf 2g}}^ {\bf 1}\]‐ and A1g‐modes, of mechanically exfoliated Ta1−xMoxS2, a metallic TMD which exhibits...

In this article, we report the first successful preparation of single- and few-layers of tantalum diselenide (2H-TaSe2) by mechanical exfoliation technique. Number of layers is confirmed by white...

1981年10月1日 · Raman spectra are presented in the high and low temperature phases of 2H-TaS 2. In the normal phase at 380 K one A1g - and two E2g -modes have been observed at 400, 27 and 286 cm -1, respectively. In the charge density wave state two extra peaks appear with strong scattering intensity in E2g - symmetry and weak in A1g -symmetry.

随着层数的增加，TaS2薄片的A1g和E2g振动模式分别出现明显的蓝移和红移。 其次，利用偏振拉曼光谱技术研究材料的结构识别和各向异性取向。

2019年4月8日 · 在电荷密度波状态下，E2g 和 A1g 对称性中新产生的电荷密度波模式随着温度的降低呈现蓝移。 这些结果表明电输运测量和拉曼光谱的组合技术在研究具有强电子-声子耦合的材料中的电荷-密度-波序方面是强大的。

2022年4月3日 · Our research demonstrates that Raman scattering in bulk 1T-TaS 2 is a complex phenomenon, which must be analyzed in terms of the influence of light illumination, resonant effects, and optical activity. Bulk 1T-TaS 2 (hqGraphene) crystals were examined by means of Raman spectroscopy using a Horiba T64000 spectrometer.

原子力显微镜图像进一步证实了少层 TaS2 纳米片和单层 TaS2 片的形成。 少层TaS2纳米片保持1T结构，而单层TaS2片表现出晶格畸变，可能采用具有三棱柱配位的类1H结构。

2020年8月24日 · 1 T -TaS 2 undergoes successive phase transitions upon cooling and eventually enters an insulating state of mysterious origin. Some consider this state to be a band insulator with interlayer...