Electronic and Magnetic Excitations in Correlated and Topological Materials

1. Auflage 2018
ISBN: 978-3-319-89937-4
Verlag: Springer

Buch, Englisch, 102 Seiten, Format (B × H): 155 mm x 235 mm, Gewicht: 1788 g

Reihe: Springer Theses

This thesis reports a major breakthrough in discovering the superconducting mechanism in CeCoIn , the “hydrogen atom” among heavy fermion compounds. By developing a novel theoretical formalism, the study described herein succeeded in extracting the crucial missing element of superconducting pairing interaction from scanning tunneling spectroscopy experiments. This breakthrough provides a theoretical explanation for a series of puzzling experimental observations, demonstrating that strong magnetic interactions provide the quantum glue for unconventional superconductivity. Additional insight into the complex properties of strongly correlated and topological materials was provided by investigating their non-equilibrium charge and spin transport properties. The findings demonstrate that the interplay of magnetism and disorder with strong correlations or topology leads to complex and novel behavior that can be exploited to create the next generation of spin electronics and quantum computing devices.

Zielgruppe

Research

Autoren/Hrsg.

Van Dyke, John S.

Fachgebiete

• Naturwissenschaften Chemie Analytische Chemie Magnetresonanz
• Naturwissenschaften Physik Elektromagnetismus Mikroskopie, Spektroskopie
• Naturwissenschaften Physik Thermodynamik Festkörperphysik, Kondensierte Materie
• Technische Wissenschaften Technik Allgemein Nanotechnologie

Inhaltsverzeichnis

Introduction.- Superconducting Gap in CeCoIn .- Pairing Mechanism in CeCoIn .- Real and Momentum Space Probes in CeCoIn : Defect States in Differential Conductance and Neutron Scattering Spin Resonance.- Transport in Nanoscale Kondo Lattices.- Charge and Spin Currents in Nanoscale Topological Insulators.- Conclusions.- Appendix: Keldysh Formalism for Transport.

Über Autor(innen)

John Van Dyke is a postdoctoral researcher at the University of Iowa. He obtained his PhD from the University of Illinois, Chicago.