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13 papers · 2 filters
Nanostructures and Defects in Non-equilibrium Synthesized Filled Skutterudite CeFe4Sb12
Juan Zhou, Qing Jie, Lijun Wu +3
We studied nanoprecipitates and defects in p-type filled skutterudite CeFe4Sb12 prepared by non-equilibrium melt-spinning plus spark plasma sintering method using transmission elec…
High Pressure Structural Stability of Multiferroic Hexagonal REMnO3
P. Gao, Z. Chen, T. A. Tyson +6
Structural changes in REMnO3 (RE= Y, Ho, Lu) under high pressure were examined by synchrotron x-ray diffraction methods at room temperature. Compression occurs more readily in the…
Enhanced Static Approximation to the Electron Self-Energy Operator for Efficient Calculation of Quasiparticle Energies
Wei Kang, Mark S. Hybertsen
An enhanced static approximation for the electron self energy operator is proposed for efficient calculation of quasiparticle energies. Analysis of the static COHSEX approximation…
Charge transfer in FeOCl intercalation compounds and its pressure dependence: An x-ray spectroscopic study
I. Jarrige, Y. Q. Cai, S. R. Shieh +4
We present a study of charge transfer in Na-intercalated FeOCl and polyaniline-intercalated FeOCl using high-resolution x-ray absorption spectroscopy and resonant x-ray emission sp…
Quasiparticle and Optical Properties of Rutile and Anatase TiO
Wei Kang, Mark S. Hybertsen
Quasiparticle excitation energies and optical properties of TiO in the rutile and anatase structures are calculated using many-body perturbation theory methods. Calculations…
Interface ferromagnetism and orbital reconstruction in BiFeO3- La0.7Sr0.3MnO3 heterostructures
P. Yu, J. -S. Lee, S. Okamoto +14
We report the formation of a novel ferromagnetic state in the antiferromagnet BiFeO3 at the interface with La0.7Sr0.3MnO3. Using x-ray magnetic circular dichroism at Mn and Fe L2,3…