Evolution of the charge density wave state in the rare-earth tritellurides under uniaxial stress and disorder
Abstract/Contents
- Abstract
- Materials with strong electron correlations often exhibit a complex interplay between competing or coexisting ordered phases, such as charge order, magnetism, and superconductivity. Model systems which isolate just one of these components, however, can provide a practical path for navigating this complexity. This dissertation provides detailed studies of the behavior of the rare-earth tritellurides (RTe3 where R=Y, La-Nd, Sm, Gd-Tm) a candidate model system under two different perturbations, namely uniaxial stress and disorder. First, however, I present the results of analytical and numerical modeling of heat flow in measurements of the AC elastocaloric effect (AC-ECE), a new experimental tool that I use to investigate the title compounds. My work demonstrates that the details of the frequency-dependent sensitivity in AC-ECE measurements are highly nontrivial, and I present both intuitive explanations of these effects as well as a quantitative match with experiment. I apply the AC-ECE technique to explore the effects of in-plane uniaxial stress on the CDW transitions in both ErTe3 and TmTe3. A combination of AC-ECE measurements, together with in-plane and out-of-plane elastoresistivity measurements, clearly detects changes in the critical temperatures, transport anisotropy, and thermodynamic quantities as a function of strain. Finally, I describe the transport, thermodynamic, and scattering characteristics of single crystals of PdxErTe3, in which neutral Pd atoms intercalated between the Te bilayers act as a weak random potential. This work has established RTe3 as a model system for studying the interplay of unidirectional CDW formation, in-plane uniaxial stress, disorder, and superconductivity. Further investigation of the inter-relation of these effects could have direct bearing on a range of other material systems of current interest
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 | Straquadine, Joshua Alan Wolfe |
|---|---|
| Degree supervisor | Fisher, Ian R. (Ian Randal) |
| Thesis advisor | Fisher, Ian R. (Ian Randal) |
| Thesis advisor | Hwang, Harold Yoonsung, 1970- |
| Thesis advisor | Kivelson, Steven |
| Degree committee member | Hwang, Harold Yoonsung, 1970- |
| Degree committee member | Kivelson, Steven |
| Associated with | Stanford University, Department of Applied Physics. |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Joshua Alan Wolfe Straquadine |
|---|---|
| Note | Submitted to the Department of Applied Physics |
| Thesis | Thesis Ph.D. Stanford University 2020 |
| Location | electronic resource |
Access conditions
- Copyright
- © 2020 by Joshua Alan Wolfe Straquadine
- 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...