Phase Diagram and Magnetic Excitations of BaFe2-xNixAs2: A Neutron Scattering Study
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Beschreibung
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.
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.
Nominated as an outstanding Ph.D. thesis by the Chinese Academy of Sciences Provides a precise phase diagram of BaFe2-xNixAs2 and reveals an avoided quantum critical point Discusses the nematic spin correlations in the tetragonal state of BaFe2-xNixAs2 and their connections to electronic nematic spin as revealed by resistivity measurements on detwinned samples Describes the detailed doping evolution of the magnetic excitations in overdoped BaFe2-xNixAs2 and their connections with superconductivity Includes supplementary material: sn.pub/extras
Autor*in
Xingye Lu
Themen in »Phase Diagram and Magnetic Excitations of BaFe2-xNixAs2: A Neutron Scattering Study«
Iron-based Superconductor Nematic Spin Correlations Neutron Scattering Spectrometry Incommensurate Magnetic Order Magneto Elastic Coupling Dynamic Structure Factor