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21 papers · 2 filters
PDFgetX3: A rapid and highly automatable program for processing powder diffraction data into total scattering pair distribution functions
Pavol Juhas, Timur Davis, Christopher L. Farrow +1
PDFgetX3 is a new software application for converting X-ray powder diffraction data to atomic pair distribution function (PDF). PDFgetX3 has been designed for ease of use, speed an…
Microscopic theory of singlet exciton fission. II. Application to pentacene dimers and the role of superexchange
Timothy C. Berkelbach, Mark S. Hybertsen, David R. Reichman
In the preceding paper, we assembled the theoretical components necessary for a unified framework of singlet fission, a type of multiexciton generation producing two triplet excito…
Microscopic theory of singlet exciton fission. I. General formulation
Timothy C. Berkelbach, Mark S. Hybertsen, David R. Reichman
Singlet fission, a spin-allowed energy transfer process generating two triplet excitons from one singlet exciton, has the potential to dramatically increase the efficiency of organ…
Interface characterization of Co2MnGe/Rh2CuSn Heusler multilayers
Ronny Knut, Peter Svedlindh, Klas Gunnarsson +10
All-Heusler multilayer structures have been investigated by means of high kinetic x-ray photoelectron spectroscopy and x-ray magnetic circular dichroism, aiming to address the amou…
Engineering polarization rotation in a ferroelectric superlattice
J. Sinsheimer, S. J. Callori, B. Bein +6
A key property that drives research in ferroelectric perovskite oxides is their strong piezoelectric response in which an electric field is induced by an applied strain, and vice-v…
Evidence for anisotropic polar nanoregions in relaxor PMN: A neutron study of the elastic constants and anomalous TA phonon damping
C. Stock, P. M. Gehring, H. Hiraka +6
We use neutron scattering to characterize the acoustic phonons in the relaxor PMN and demonstrate the presence of an anisotropic damping mechanism directly related to short-range,…