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Phase Diagram and Magnetic Excitations of BaFe2-xNixAs2: A Neutron Scattering Study

  • Xingye Lu
Book
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Part of the Springer Theses book series (Springer Theses)

About this book

Introduction

This book studies the structural, magnetic and electronic properties of, as well as magnetic excitations in, high-temperature BaFe2-xNixAs2 superconductors using neutron diffraction and neutron spectroscopic methods. It describes the precise determination of the phase diagram of BaFe2-xNixAs2, which demonstrates strong magnetoelastic coupling and avoided quantum criticality driven by short-range incommensurate antiferromagnetic order, showing cluster spin glass behavior. It also identifies strong nematic spin correlations in the tetragonal state of uniaxial strained BaFe2-xNixAs2. The nematic correlations have similar temperature and doping dependence as resistivity anisotropy in detwinned samples, which suggests that they are intimately connected. Lastly, it investigates doping evolution of magnetic excitations in overdoped BaFe2-xNixAs2 and discusses the links with superconductivity. This book includes detailed neutron scattering results on BaFe2-xNixAs2 and an introduction to neutron scattering techniques, making it a useful guide for readers pursuing related research.

Keywords

Iron-based Superconductor Nematic Spin Correlations Neutron Scattering Spectrometry Incommensurate Magnetic Order Magneto Elastic Coupling Dynamic Structure Factor

Authors and affiliations

  • Xingye Lu
    • 1
  1. 1.Center for Advanced Quantum Studies and Department of PhysicsBeijing Normal UniversityBeijingChina

Bibliographic information

  • DOI https://doi.org/10.1007/978-981-10-4998-9
  • Copyright Information Springer Nature Singapore Pte Ltd. 2017
  • Publisher Name Springer, Singapore
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-981-10-4997-2
  • Online ISBN 978-981-10-4998-9
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
  • Buy this book on publisher's site