126 citations · 395 across the 7 of their papers we have counts for
7 papers
Ab initio many-body photoemission theory of transverse energy distribution of photoelectrons: PbTe(111) as a case study with experimental comparisons
J. Kevin Nangoi, Siddharth Karkare, Ravishankar Sundararaman +2
This manuscript presents, to our knowledge, the first fully ab initio many-body photoemission framework to predict the transverse momentum distributions and the mean transverse ene…
Ultracold electrons via Near-Threshold Photoemission from Single-Crystal Cu(100)
Siddharth Karkare, Gowri Adhikari, W. Andreas Schroeder +4
Achieving a low mean transverse energy or temperature of electrons emitted from the photocathode-based electron sources is critical to the development of next-generation and compac…
Brightness of nonequilibrium photoemission in metallic photocathodes near threshold
Jai Kwan Bae, Ivan Bazarov, Pietro Musumeci +3
The operation of photoemission electron sources with wavelengths near the photoemission threshold has been shown to dramatically decrease the minimum achievable photocathode emitta…
Three dimensional localization of nanoscale battery reactions using soft X-ray tomography
Young-Sang Yu, Maryam Farmand, Chunjoong Kim +16
Battery function is determined by the efficiency and reversibility of the electrochemical phase transformations at solid electrodes. The microscopic tools available to study the ch…
A One-Step Model of Photoemission from Single Crystal Surfaces
Siddharth Karkare, Weishi Wan, Jun Feng +2
In this paper, we present a 3-D one step photoemission model that can be used to calculate the quantum efficiency and momentum distributions of electrons photoemitted from ordered…
Near atomically smooth alkali antimonide photocathode thin films
Jun Feng, Siddharth Karkare, James Nasiatka +3
Nano-roughness limits the emittance of electron beams that can be generated by high efficiency photocathodes, such as the thermally reacted alkali antimonide thin films. However th…
Coherent X-ray Diffractive Imaging; applications and limitations
S. Marchesini, H. N. Chapman, S. P. Hau-Riege +8
The inversion of a diffraction pattern offers aberration-free diffraction-limited 3D images without the resolution and depth-of-field limitations of lens-based tomographic systems,…