X-Ray Diffuse Scattering

Contains summary of resarch and reports on three research projects.Joint Services Electronics Program (Contract DAALO03-86-K-0002

X-Ray Scattering Spectroscopy

Contains research objectives and summary of research on one research project.Joint Services Electronics Program (Contract DAABO7-76-C-1400

X-Ray Diffuse Scattering

Contains summary of research and reports on three research projects.Joint Services Electronics Program (Contract DAAG29-83-K-0003

X-Ray Diffuse Scattering

Contains research summary and reports on six research projects.Joint Services Electronics Program (Contract DAAG29-78-C-0020

X-Ray Diffuse Scattering

Contains research summary and reports on three research projects.Joint Services Electronics Program (Contract DAAG29-83-K-0003

X-Ray Diffuse Scattering

Contains summary of resarch and reports on three research projects.Joint Services Electronics Program (Contract DAALO03-86-K-0002

Table of Contents

Contains the table of contents

Table of Contents

Contains the table of contents

X-Ray Diffuse Scattering

Contains research summary and reports on three research projects.Joint Services Electronics Program (Contract DAALO3-86-K-0002

Emergent phases in iron pnictides: Double-Q antiferromagnetism, charge order and enhanced nematic correlations

Electron correlations produce a rich phase diagram in the iron pnictides. Earlier theoretical studies on the correlation effect demonstrated how quantum fluctuations weaken and concurrently suppress a $C_2$-symmetric single-Q antiferromagnetic order and a nematic order. Here we examine the emergent phases near the quantum phase transition. For a $C_4$-symmetric collinear double-Q antiferromagnetic order, we show that it is accompanied by both a charge order and an enhanced nematic susceptibility. Our results provide understanding for several intriguing recent experiments in hole-doped iron arsenides, and bring out common physics that underlies the different magnetic phases of various iron-based superconductors.Comment: 5+6 pages, 2 figures; (v2) issues with cross-referencing between the main text and supplementary material are fixe