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Electronic and Magnetic Excitations in Correlated and Topological Materials

  • Book
  • © 2018

Overview

Authors:
  1. John S. Van Dyke

    1. Department of Physics and Astronomy, Iowa State University, Ames, USA

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  • Nominated as an outstanding Ph.D. thesis by the University of Illinois, Chicago
  • Provides a theoretical explanation for a series of puzzling experimental observations around unconventional superconductivity
  • Develops a novel theoretical formalism for extracting the superconducting pairing interaction from scanning tunneling spectroscopy experiments
  • Offers readers insight into the possibilities for the next generation of spin electronics and quantum computing devices

Part of the book series: Springer Theses (Springer Theses)

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Table of contents (7 chapters)

  1. Front Matter

    Pages i-xii
    Download chapter PDF

  2. Introduction

    • John S. Van Dyke
    Pages 1-7

  3. Superconducting Gap in CeCoIn5

    • John S. Van Dyke
    Pages 9-28

  4. Pairing Mechanism in CeCoIn5

    • John S. Van Dyke
    Pages 29-45

  5. Real and Momentum Space Probes in CeCoIn5: Defect States in Differential Conductance and Neutron Scattering Spin Resonance

    • John S. Van Dyke
    Pages 47-63

  6. Transport in Nanoscale Kondo Lattices

    • John S. Van Dyke
    Pages 65-75

  7. Charge and Spin Currents in Nanoscale Topological Insulators

    • John S. Van Dyke
    Pages 77-96

  8. Conclusion

    • John S. Van Dyke
    Pages 97-98

  9. Back Matter

    Pages 99-102
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Keywords

About this book

This ​thesis reports a major breakthrough in discovering the superconducting mechanism in CeCoIn5, 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.

Authors and Affiliations

  • Department of Physics and Astronomy, Iowa State University, Ames, USA

    John S. Van Dyke

About the author

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

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