Uniaxial heterostrain in twisted bilayer graphene above the magic angle
Abstract/Contents
- Abstract
- Twisted bilayer graphene is an experimentally rich platform, hosting a variety of exotic states of matter with an unprecedented degree of tunability. I present measurements of a twisted bilayer graphene device twisted to 1.4 degrees, well above the magic angle at which correlations dominate. Despite the lack of correlated states, the device shows several unexpected behaviors in magnetotransport: regions in density of large quadratic magnetoresistance concurrent with an apparently non-Diophantine Landau fan diagram. I show that uniaxial heterostrain of only a few tenths of a percent neatly explains these unusual magnetotransport measurements. It is presently difficult to control such small amounts of strain in experiments. If we can control it, then heterostrain becomes a powerful tuning knob to control the band structure of twisted bilayer graphene, much like twist angle.
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 | 2023; ©2023 |
| Publication date | 2023; 2023 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Finney, Robert |
|---|---|
| Degree supervisor | Goldhaber-Gordon, David |
| Thesis advisor | Goldhaber-Gordon, David |
| Thesis advisor | Feldman, Ben |
| Thesis advisor | Kastner,Marc |
| Degree committee member | Feldman, Ben |
| Degree committee member | Kastner,Marc |
| Associated with | Stanford University, School of Humanities and Sciences |
| Associated with | Stanford University, Department of Physics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Joe Finney. |
|---|---|
| Note | Submitted to the Department of Physics. |
| Thesis | Thesis Ph.D. Stanford University 2023. |
| Location | https://purl.stanford.edu/fz953jp9067 |
Access conditions
- Copyright
- © 2023 by Robert Finney
- License
- This work is licensed under a Creative Commons Attribution 3.0 Unported license (CC BY).
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