The PULS group at the LPS
Congratulations to Aravind Raji on receiving the 2025 Paris-Saclay Thesis Award.We were fortunate to have Aravind working with great dedication, combining scanning transmission electron microscopy, electron spectroscopy, and synchrotron-based photoemission …
a) HAADF-STEM image of a SrTiO₃–capped PrNiO₂ film . b) 4D-STEM divergence-COM analysis showing clean infinite-layer phase without the presence of any apical oxygen. c) Real-space evolution of the O-K …
Two-dimensional (2D) moiré superlattices, formed by stacking individual layers such as 2H transition metal dichalcogenides (TMDs) with accurately twisted angles, have garnered significant attention due to their potential to host …
The paper on “Direct observation of electronic band gap and hot carrier dynamics in GeAs” has been published in Appl. Phys. Lett. 125, 182106 (2024).
The study of “Acceptor and donor impurity levels in hexagonal-diamond silicon” appeared in Phys. Rev. Materials 8, 114601 (2024). The effect of p- and n-type substitutional doping on the structural …
The charge density distribution, which fully defines the ground-state properties of a material system, can be accurately measured in single crystals using X-ray diffraction. However, there is still a lack …
The paper on a new “Pulsewidth-switchable ultrafast source at 114 nm” has been published in Optics Letters 48, 4625 (2023)
Anahita Omoumi defended her PhD thesis on December 15th, 2023. Congratulations, Anahita!
In a paper published in Nano Letters , we show how chemisorption of potassium on BaNiS2 can tune Dirac bands in reciprocal space at the surface (J. Zhang, T. Sohier, …
The electronic structure of prototype topological insulators has been studied with ultrafast ARPES, using the ARTOF spectrometer in combination with the femtosecond laser source at the LPS. Using time-resolved multi-dimensional …