Numerical approaches to theory of spectroscopy in correlated materials
Abstract/Contents
- Abstract
- Strongly correlated systems exhibit novel phenomena such as superconductivity and magnetism that arise from the interplay between many intertwined degrees of freedom. In this dissertation I discuss my work using state-of-the-art exact diagonalization simulations in attempts to understand the physics of correlated materials via their response to various experimental probes. I first discuss simulating x-ray absorption spectra to extract crucial information regarding correlation effects in iron-based superconductors and the pressure-induced phase transitions in hematite. I then discuss modeling resonant inelastic x-ray scattering spectra of the cuprate superconductors and studying the orbital characters of the excitation profiles. Following the discussion of photon-based spectroscopies, I then shift the focus to magnetic properties of iron-based superconductors. I will discuss a possible orbital ordering scenario in connection with the orthorhombic anisotropies observed in neutron scattering, transport, and other spectroscopic experiments performed on these materials. At the end of the dissertation, I examine the role of magnetic frustration and demonstrate how the response of antiferromagnets to non-magnetic impurities and magnetic Raman scattering can reveal the degree of frustration and help narrow the possible models for the iron-pnictide materials.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2011 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Chen, Cheng-Chien |
|---|---|
| Associated with | Stanford University, Department of Physics |
| Primary advisor | Devereaux, Thomas Peter, 1964- |
| Thesis advisor | Devereaux, Thomas Peter, 1964- |
| Thesis advisor | Kivelson, Steven |
| Thesis advisor | Raghu, Srinivas, 1978- |
| Advisor | Kivelson, Steven |
| Advisor | Raghu, Srinivas, 1978- |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Cheng-Chien Chen. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Ph.D. Stanford University 2011 |
| Location | electronic resource |
Access conditions
- Copyright
- © 2011 by Cheng-Chien Chen
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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