533 citations · 1.9k across the 18 of their papers we have counts for
17 papers
Observation of low energy dispersive modes in un- derdoped (La, Nd) 2--x Sr x CuO 4
Matteo D 'Astuto, Sylvain Denis, Jeff Graf +10
We find excitations lower in energy than known phonon modes in underdoped LaSrCuO (x=0.08), with both inelastic X-Ray scattering (IXS) and inelastic neutron…
Nodal quasiparticle meltdown in ultra-high resolution pump-probe angle-resolved photoemission
J. Graf, C. Jozwiak, C. L. Smallwood +4
High- cuprate superconductors are characterized by a strong momentum-dependent anisotropy between the low energy excitations along the Brillouin zone diagonal (nodal direction…
A high-efficiency spin-resolved phototemission spectrometer combining time-of-flight spectroscopy with exchange-scattering polarimetry
C. Jozwiak, J. Graf, G. Lebedev +7
We describe a spin-resolved electron spectrometer capable of uniquely efficient and high energy resolution measurements. Spin analysis is obtained through polarimetry based on low-…
Crossover region between nodal and anti-nodal states at the Fermi level of optimally and overdoped BiSrNdCuO
D. R. Garcia, J. Graf, C. Jozwiak +3
We have studied BiSrNdCuO using Angle Resolved Photoemission Spectroscopy in the optimal and overdoped regions of the phase diagram. We identify a nar…
Vacuum space charge effect in laser-based solid-state photoemission spectroscopy
J. Graf, S. Hellmann, C. Jozwiak +6
We report a systematic measurement of the space charge effect observed in the few-ps laser pulse regime in laser-based solid-state photoemission spectroscopy experiments. The broad…
Phonon dispersion and low energy anomaly in CaC
Matteo D'Astuto, Matteo Calandra, N. Bendiab +10
We report measurements of phonon dispersion in CaC using inelastic X-ray and neutron scattering. We find good overall agreement, particularly in the 50 meV energy region, betwe…