67 citations · 316 across the 15 of their papers we have counts for
17 papers
Interfacial properties of MoS2 thin films grown on functional substrates
Hafiz Sami Ur Rehman, Nunzia Coppola, Alice Galdi +8
Interface chemistry and defect formation in MoS2 thin films grown on single crystal substrates critically determine the electronic structure of MoS2 and thus can strongly modify ma…
Substrate induced optimization of the Electrocatalytic Hydrogen Evolution Reaction (HER) performances of MoS2 thin film
Hafiz Sami-Ur-Rehman, Arpana Singh, Nunzia Coppola +11
Molybdenum disulfide (MoS2) has emerged as a promising, cost-effective catalyst for hydrogen production via water splitting. We investigate the structural and electrocatalytic prop…
Impact of Electron Correlations on Infinite-Layer Cuprates and Nickelates
Xunyang Hong, Yuetong Wu, Ying Chan +18
Optimization of unconventional superconductivity involves a balance of interaction strengths. Precise determination of correlation strength across different material families is th…
Temperature-induced hysteretic behavior of resistivity and magnetoresistance of electrodeposited bismuth films for X- ray transition-edge sensor absorbers
Orlando Quaranta, Nunzia Coppola, Lisa Gades +7
This study investigates the temperature-induced hysteretic behavior of resistivity and magnetoresistance in electrodeposited bismuth films, with a focus on their application as abs…
Measurement of Spin-Polarized Photoemission from Wurtzite and Zinc-Blende Gallium Nitride Photocathodes
S. J. Levenson, M. B. Andorf, B. D. Dickensheets +7
Spin-polarized photoemission from wurtzite and zinc-blende gallium nitride (GaN) photocathodes has been observed and measured for the first time. The p-doped GaN photocathodes were…
Atomically smooth films of CsSb: a chemically robust visible light photocathode
C. T. Parzyck, C. A. Pennington, W. J. I. DeBenedetti +14
Alkali antimonide semiconductor photocathodes provide a promising platform for the generation of high brightness electron beams, which are necessary for the development of cutting-…
Gapped collective charge excitations and interlayer hopping in cuprate superconductors
M. Hepting, M. Bejas, A. Nag +17
We use resonant inelastic x-ray scattering (RIXS) to probe the propagation of plasmons in the electron-doped cuprate superconductor SrLaCuO (SLCO). We detect a…
Multi-scale time-resolved electron diffraction: A case study in moiré materials
C. J. R. Duncan, M. Kaemingk, W. H. Li +16
Ultrafast-optical-pump -- structural-probe measurements, including ultrafast electron and x-ray scattering, provide direct experimental access to the fundamental timescales of atom…
Ab initio study of the crystal and electronic structure of mono- and bi-alkali antimonides: Stability, Goldschmidt-like tolerance factors, and optical properties
J. K. Nangoi, M. Gaowei, A. Galdi +4
Mono- and bi-alkali antimonides, XYSb (X and Y from Group I), are promising for next-generation electron emitters due to their capability of producing high-quality electron bea…
Operation of Cs-Sb-O activated GaAs in a high voltage DC electron gun at high average current
Jai Kwan Bae, Matthew Andorf, Adam Bartnik +4
Negative Electron Affinity (NEA) activated GaAs photocathodes are the most popular option for generating a high current (> 1 mA) spin-polarized electron beam. Despite its popularit…
A single-crystal alkali antimonide photocathode: high efficiency in the ultra-thin limit
C. T. Parzyck, A. Galdi, J. K. Nangoi +10
The properties of photoemission electron sources determine the ultimate performance of a wide class of electron accelerators and photon detectors. To date, all high-efficiency visi…
A kiloelectron-volt ultrafast electron micro-diffraction apparatus using low emittance semiconductor photocathodes
W. H. Li, C. J. R. Duncan, M. B. Andorf +10
We report the design and performance of a time-resolved electron diffraction apparatus capable of producing intense bunches with simultaneously single digit micron probe size, long…
Computational Synthesis of Substrates by Crystal Cleavage
Joshua T. Paul, Alice Galdi, Christopher Parzyck +2
The discovery of novel substrate materials has been dominated by trial and error, opening the opportunity for a systematic search. To identify stable crystal surfaces, we generate…
Improved lifetime of a high spin polarization superlattice photocathode
Jai Kwan Bae, Alice Galdi, Luca Cultrera +3
Negative Electron Affinity (NEA) activated surfaces are required to extract highly spin polarized electron beams from GaAs-based photocathodes, but they suffer extreme sensitivity…
Multiple double-exchange mechanism by Mn-doping in manganite compounds
P. Orgiani, A. Galdi, C. Aruta +9
Double-exchange mechanisms in REAEMnO manganites (where RE is a trivalent rare-earth ion and AE is a divalent alkali-earth ion) relies on the strong exchange in…
Evolution of magnetic phases and orbital occupation in (SrMnO3)n/(LaMnO3)2n superlattices
C. Aruta, C. Adamo, A. Galdi +11
The magnetic and electronic modifications induced at the interfaces in (SrMnO)/(LaMnO) superlattices have been investigated by linear and circular magnetic…
Charge density waves enhance the electronic noise of manganites
C. Barone, A. Galdi, N. Lampis +6
The transport and noise properties of Pr_{0.7}Ca_{0.3}MnO_{3} epitaxial thin films in the temperature range from room temperature to 160 K are reported. It is shown that both the b…