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Collective Excitations in the Antisymmetric Channel of Raman Spectroscopy

  • Book
  • © 2022

Overview

Authors:
  1. Hsiang-Hsi Kung

    1. Quantum Matter Institute, University of British Columbia, Vancouver, Canada

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  • Nominated as an outstanding PhD thesis by Rutgers University.
  • Provides an introduction to Raman scattering, including an interlude on its historical development
  • Advances understanding of optically-excited collective modes in materials of substantial current interest

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

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Table of contents (5 chapters)

  1. Front Matter

    Pages i-xvi
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  2. Introduction

    • Hsiang-Hsi Kung
    Pages 1-22

  3. Experimental Setup

    • Hsiang-Hsi Kung
    Pages 23-40

  4. Raman Scattering in URu2Si2

    • Hsiang-Hsi Kung
    Pages 41-93

  5. Secondary Emission in Bi2Se3

    • Hsiang-Hsi Kung
    Pages 95-148

  6. Conclusion

    • Hsiang-Hsi Kung
    Pages 149-151
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Keywords

About this book

This thesis contains three breakthrough results in condensed matter physics. Firstly, broken reflection symmetry in the hidden-order phase of the heavy-fermion material URu2Si2 is observed for the first time. This represents a significant advance in the understanding of this enigmatic material which has long intrigued the condensed matter community due to its emergent long range order exhibited at low temperatures (the so-called “hidden order”). Secondly and thirdly, a novel collective mode (the chiral spin wave) and a novel composite particle (the chiral exciton) are discovered in the three dimensional topological insulator Bi2Se3. This opens up new avenues of possibility for the use of topological insulators in photonic, optoelectronic, and spintronic devices. These discoveries are facilitated by using low-temperature polarized Raman spectroscopy as a tool for identifying optically excited collective modes in strongly correlated electron systems and three-dimensional topological insulators.  


Authors and Affiliations

  • Quantum Matter Institute, University of British Columbia, Vancouver, Canada

    Hsiang-Hsi Kung

About the author

Hsiang-Hsi (Sean) Kung is a postdoctoral researcher at the Quantum Matter Institute at the University of British Columbia. He received his PhD from Rutgers University in 2018.

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