2H二烯化钽TaSe2是一种金属,在~120 K处是一个无公度电荷密度波(CDW)系统,在~90 K时是一个相应的CDW体系,在Tc~0.1K时是一个超导体。这些层是通过范德瓦尔斯相互作用堆叠在一起,并可以剥离成薄的2D层。摘要丹参酮属V族过渡金属双卤素类化合物(TMDC)。
2H-TaSe2 is a metal, an incommensurate Charge density waves (CDW) system at ~120K, a commensurate CDW at ~90K and a superconductor with Tc ~0.1K. The layers are stacked together via van der Waals interactions and can be exfoliated into thin 2D layers. Tantalum Diselenide belongs to the ...
简要描述:二硒化钽晶体 2H-TaSe2 (Tantalum Selenide)晶体尺寸:~10毫米电学性能:Metal, Charge density waves (CDW) system at ~120K, Superconductor (Tc ~0.1K) 金属,电荷密度波(CDW)晶体结构:六边形晶胞参数:a = b = 0.342 nm, c = 1.2
有鉴于此,近日,复旦大学晏湖根教授等通过实验证明了相关2D电荷密度波(CDW)材料2H-TaSe2中的局部等离激元。等离激元共振可以覆盖从太赫兹(40 μm)到通讯(1。55 μm)波段的较宽光谱范围,并且可以通过改变厚度和介电环境进一步对其进行调谐。由于带间跃迁的普遍屏蔽效应,等离激元色散在大波矢处变平。更有趣的是,观...
Here, the CDW-induced collective driven of non-equilibrium carriers in a field-effect transistor has been demonstrated for the sensitive photodetection at the highly-pursuit terahertz band. We show that the 2H–TaSe2-based photodetector exhibits a fast photoresponse, as short as 14 μs, and a ...
Flux zone grown 2H-TaSe2 crystals come with guaranteed CDW behavior. Flux zone vs. CVT growth method: Contamination and defects in TaSe2 crystals are well known to influence CDW behavior. (temperature onset, ability to observe, sheet resistance). Flux zone technique is a halide free and slow...
使用高能X射线衍射和大规模的三维结构建模,我们揭示了原型电荷密度波(CDW)系统中局部晶格畸变的演变2H-钽Ë2当它从室温以上的正常状态冷却到Ta原子形成一个长程有序超结构的温度时。特别地,我们发现该结构是通过Ta原子的逐渐面内聚集形成的,该Ta原子已经在室温附近显示出异常短的键合距离,而不是通过在临界有序温度...
2,Chowdhury, Sugata, et al. "Rearrangement of the Cation (Ta) of 2H-TaSe 2 in the Charge Density Wave Phase (CDW): A DFT Study."Bulletin of the American Physical Society63 (2018). 3,Wu, Yueshen, et al. "Dimensional reduction and ionic gating induced enhancement of superconductivity in...
2]]>Charge-density-waveThe charge density wave (CDW) in the layered compound2H-TaSe2at low temperatures has a commensurate phase, which causes super lattice points to appear in the Brilluin zone of the undistorted phase. A Born-von Karman formalism has been employed for the calculation of ...
2,Chowdhury, Sugata, et al. "Rearrangement of the Cation (Ta) of 2H-TaSe 2 in the Charge Density Wave Phase (CDW): A DFT Study."Bulletin of the American Physical Society63 (2018). 3,Wu, Yueshen, et al. "Dimensional reduction and ionic gating induced enhancement of superconductivity in...