Theory and applications of time-resolved spectroscopies
Abstract/Contents
- Abstract
- Time-resolved spectroscopies of materials provide a wealth of information on material dynamics, and have been a focus of study for decades. With increasing energy and time resolution, time-resolved spectroscopies have been able to detect quasiparticle dynamics, details of electron transport, and ultrafast phase transitions. More recently, as a novel technique, time-resolved resonant inelastic x-ray scattering (trRIXS) is developed and used to investigate spin and charge orders in strongly correlated materials. In this dissertation, I will review the theories of equilibrium and nonequilibrium spectroscopies, with an emphasis on the development of trRIXS theory. Numerical simulation of trRIXS is performed on a single-band tight binding model under the high frequency limit and low frequency limit, revealing Floquet physics and real-time charge oscillation respectively. I will also give examples of applications of time-resolved spectroscopies, especially trRIXS: detecting photoinduced chiral edge states in a graphene nanoribbon and investigating charge excitations in a pumped Mott insulator. Specifically, for the graphene nanoribbon, trRIXS has the potential to selectively probe certain edge states at given energies, providing a conclusive answer to the existence of photoinduced chiral edge states. Finally I will discuss some technical aspects in my implementation of trRIXS code for noninteracting systems. I hope this dissertation can deepen the understanding of pump-probe spectroscopies, especially the novel trRIXS, and provide resources to help design future experiments.
Description
| Type of resource | text |
|---|---|
| Form | electronic resource; remote; computer; online resource |
| Extent | 1 online resource. |
| Place | California |
| Place | [Stanford, California] |
| Publisher | [Stanford University] |
| Copyright date | 2020; ©2020 |
| Publication date | 2020; 2020 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Chen, Yuan, (Researcher on material dynamics) |
|---|---|
| Degree supervisor | Devereaux, Thomas Peter, 1964- |
| Degree supervisor | Shen, Zhi-Xun |
| Thesis advisor | Devereaux, Thomas Peter, 1964- |
| Thesis advisor | Shen, Zhi-Xun |
| Thesis advisor | Lee, Young Sang, 1971- |
| Degree committee member | Lee, Young Sang, 1971- |
| Associated with | Stanford University, Department of Applied Physics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Yuan Chen. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis Ph.D. Stanford University 2020. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by Yuan Chen
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
Also listed in
Loading usage metrics...