Probing the Response of Two-Dimensional Crystals by Optical Spectroscopy

  • Yilei Li

Part of the Springer Theses book series (Springer Theses)

About this book


This thesis focuses on the study of the optical response of new atomically thin two-dimensional crystals, principally the family of transition metal dichalcogenides like MoS2. One central theme of the thesis is the precise treatment of the linear and second-order nonlinear optical susceptibilities of atomically thin transition metal dichalcogenides. In addition to their significant scientific interest as fundamental material responses, these studies provide essential knowledge and convenient characterization tools for the application of these 2D materials in opto-electronic devices. Another important theme of the thesis is the valley physics of atomically thin transition metal dichalcogenides. It is shown that the degeneracy in the valley degree of freedom can be lifted and a valley polarization can be created using a magnetic field, which breaks time reversal symmetry in these materials. These findings enhance our basic understanding of the valley electronic states and open up new opportunities for valleytronic applications using two-dimensional materials.


2D materials in opto-electronic devices Atomically thin 2D materials Atomically thin transition metal dichalcogenides Graphene plasmon enhanced vibrational sensing Optical spectroscopy of dichalcogenides Optics of monolayer transition metal dichalcogenides Raman 2D mode in Graphene Transition metal dichalcogenides Valley physics Valleytronics using 2D materials

Authors and affiliations

  • Yilei Li
    • 1
  1. 1.Department of PhysicsColumbia UniversityNew YorkUSA

Bibliographic information

  • DOI
  • Copyright Information Springer International Publishing Switzerland 2016
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-319-25374-9
  • Online ISBN 978-3-319-25376-3
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
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