Publications (10)
Direct observation of phase change accommodating hydrogen uptake in bimetallic nanoparticles
LÃvia P. Matte, Maximilian Jaugstetter, Alisson S. Thill +6
Hydrogen holds great promise as a cleaner alternative to fossil fuels, but its efficient and affordable storage remains a significant challenge. Bimetallic systems, such as Pd-Ni,…
Near total reflection X-ray photoelectron spectroscopy: Quantifying chemistry at solid/liquid and solid/solid interfaces
Henrique P. Martins, Giuseppina Conti, Isvar Cordova +9
Near total reflection regime has been widely used in X-ray science, specifically in grazing incidence small angle X-ray scattering and in hard X-ray photoelectron spectroscopy. In…
Strong interlayer coupling in van der Waals heterostructures built from single-layer chalcogenides
Hui Fang, Corsin Battaglia, Carlo Carraro +16
Semiconductor heterostructures are the fundamental platform for many important device applications such as lasers, light-emitting diodes, solar cells and high-electron-mobility tra…
Two-dimensional electron systems in perovskite oxide heterostructures: Role of the polarity-induced substitutional defects
Shih-Chieh Lin, Cheng-Tai Kuo, Yu-Cheng Shao +17
The discovery of a two-dimensional electron system (2DES) at the interfaces of perovskite oxides such as LaAlO3 and SrTiO3 has motivated enormous efforts in engineering interfacial…
Mesoscale variations of chemical and electronic landscape on the surface of Weyl semimetal CoSnS visualized by ARPES and XPS
Sudheer Anand Sreedhar, Matthew Staab, Mingkun Chen +14
The multiple crystalline terminations in magnetic Weyl semimetal CoSnS display distinct topological and trivial surface states, which have successfully been distinguish…
Orbital contributions in the element-resolved valence electronic structure of Bi2Se3
Cheng-Tai Kuo, Shih-Chieh Lin, Jean-Pascal Rueff +9
In this work, we studied the bulk band structure of a topological insulator (TI) Bi2Se3 and determined the contributions of the Bi and Se orbital states to the valence bands using…
Atomic-layer-resolved composition and electronic structure of the cuprate BiSrCaCuO from soft x-ray standing-wave photoemission
Cheng-Tai Kuo, Shih-Chieh Lin, Giuseppina Conti +16
A major remaining challenge in the superconducting cuprates is the unambiguous differentiation of the composition and electronic structure of the CuO layers and those of the in…
High resolution depth profiling using near-total-reflection hard X-ray photoelectron spectroscopy
Julien E. Rault, Cheng-Tai Kuo, Henrique P. Martins +2
By adjusting the incidence angle of incoming X-ray near the critical angle of X-ray total reflection, the photoelectron intensity is strongly modulated due to the variation of X-ra…
Electronic Structure of the Dilute Magnetic Semiconductor from Hard X-ray Photoelectron Spectroscopy and Hard X-ray Angle-Resolved Photoemission
Armela Keqi, Mathias Gehlmann, Giuseppina Conti +18
We have investigated the electronic structure of the dilute magnetic semiconductor (DMS) and compared it to that of an undoped reference sample, using h…
Accurate determination of the valence band edge in hard x-ray photoemission spectra using GW theory
Johannes Lischner, Slavomir Nemsak, Giuseppina Conti +6
We introduce a new method for determining accurate values of the valence-band maximum in x-ray photoemission spectra. Specifically, we align the sharpest peak in the valence-band r…