Probing the Response of Two-Dimensional Crystals by Optical Spectroscopy / by Yilei Li.

Format:

Book

Author/Creator:

Li, Yilei., Author.

Series:

Springer Theses, Recognizing Outstanding Ph.D. Research, 2190-5053

Language:

English

Subjects (All):

Lasers.

Photonics.

Optical materials.

Electronics--Materials.

Electronics.

Surfaces (Physics).

Interfaces (Physical sciences).

Thin films.

Spectrum analysis.

Microscopy.

Optics, Lasers, Photonics, Optical Devices.

Optical and Electronic Materials.

Surface and Interface Science, Thin Films.

Spectroscopy and Microscopy.

Local Subjects:

Optics, Lasers, Photonics, Optical Devices.

Optical and Electronic Materials.

Surface and Interface Science, Thin Films.

Spectroscopy and Microscopy.

Physical Description:

1 online resource (80 p.)

Edition:

1st ed. 2016.

Place of Publication:

Cham : Springer International Publishing : Imprint: Springer, 2016.

Language Note:

English

Summary:

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.

Contents:

Introduction and Background

Intrinsic Doping Dependence of Raman 2D Mode in Graphene: Signatures of Electron-Electron Interaction

Coupling of Strongly Localized Graphene Plasmons to Molecular Vibrations

Dielectric Response of a Thin Sheet

Measurement of the Optical Dielectric Function of Monolayer Transition Metal Dichalcogenides: MoS2, MoSe2, WS2, and WSe2

Measurement of the Second-Order Nonlinear Susceptibility and Probing Symmetry Properties of Few-Layer MoS2 and h-BN by Optical Second-Harmonic Generation

Valley Splitting and Polarization by Zeeman Effect in Monolayer MoSe2

Conclusion and Prospect.

Notes:

"Doctoral Thesis accepted by Columbia University, New York, NY, USA."

Includes bibliographical references at the end of each chapters.

ISBN:

3-319-25376-X