Highlights |

A novel high-pressure monoclinic metallic phase of V_{2}O_{3}Y. Ding, C.-C. Chen, Q. Zeng, H.-S. Kim, M. J. Han, M. Balasubramanian, R. Gordon, F. Li, L. Bai, D. Popov, S. M. Heald, T. Gog, H. Mao, and M. van Veenendaal, Phys. Rev. Lett. 112, 056401 (2014); Editor’s Selection.
Vanadium sesquioxide, V |

_{4}T. F. Seman, X. Liu, J. P. Hill, M. van Veenendaal, and K. H. Ahn, Phys. Rev. B. 90, 045111 (2014).K-edge resonant inelastic x-ray scattering on transition-metal compounds, based on a local interaction between the valence shell electrons and the 1s core hole. Extending a previous result, we include explicit momentum dependence and a basis with multiple core-hole sites. We applythis formula to a single-layered charge-, orbital-, and spin-ordered manganite, La _{0.5}Sr_{1.5}MnO_{4}, and obtain good agreement with experimental data, in particular with regards to the large variation of the intensity with momentum. We find that the screening in La_{0.5}Sr_{1.5}MnO_{4} is highly localized around the core-hole site and demonstrate the potential of K-edge resonant inelastic x-ray scattering as a probe of screening dynamics in materials. |

Small-angle scattering data analysis in GSAS-IIR. B. Von Dreele, J. Appl. Crystallography 47, 1784 (2014).
The General Structure Analysis System II (GSAS-II) now contains modules for the analysis of small-angle X-ray scattering data. This includes processing of two-dimensional images to create corrected one-dimensional patterns, analysis via maximum entropy or total nonnegative least-squares methods of the size distribution, assuming polydispersity, in the dilute limit, and modeling of the one-dimensional data with combinations of Guinier/Porod, Porod, both dilute andcondensedpopulationsofscatteringobjects,andBraggscattering components; slit smearing corrections can be applied where needed. GSAS-II can apply these modeling tools over a sequence of data collected while some experimental condition is varied. This sequential refinement result can then be subjected to a post refinement analysis to determine global parameters encompassing the entire experiment. |