Interfacial spin wave phenomena in thin film oxide heterostructures
Abstract/Contents
- Abstract
- Spintronics, based on the use of the spin degree of freedom of electrons, has attracted much attention as an avenue for creating energy-efficient memory storage and electronic devices. A pure spin current, where spin angular momentum is transferred without any charge current, is desirable to realize low-loss devices due to the lack of heat dissipation associated with moving charge. Low-damping magnetic insulator thin films that can propagate spin currents with minimal dissipation are essential for this purpose. At the same time, magnetic insulators are also useful to stabilize novel ground states in neighboring materials. We have identified a class of spinel ferrite magnetic insulators which have desirable properties for these applications. I will present results on spin-to-charge and charge-to-spin conversion in low-damping MgAl0.5Fe1.5O4 (MAFO) and Li0.5Al1Fe1.5O4 (LAFO) thin films, which show ideal properties for pure spin current applications. Further, I will discuss MAFO/Bi2Se3 bilayers in the context of inducing a magnetic proximity effect in a topological insulator, and I will show that common techniques currently used to detect magnetic proximity effects are insufficient. Finally, I will characterize LaTiO3 thin films for charge-to-spin conversion in bilayers with CoFeB. These results highlight both the promise and challenges associated with building magnetic heterostructures for novel, energy-efficient devices.
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 | 2022; ©2022 |
| Publication date | 2022; 2022 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Author | Riddiford, Lauren Jane |
|---|---|
| Degree supervisor | Suzuki, Yuri, (Applied Physicist) |
| Thesis advisor | Suzuki, Yuri, (Applied Physicist) |
| Thesis advisor | Hwang, Harold Yoonsung, 1970- |
| Thesis advisor | Wang, Shan X |
| Degree committee member | Hwang, Harold Yoonsung, 1970- |
| Degree committee member | Wang, Shan X |
| Associated with | Stanford University, Department of Applied Physics |
Subjects
| Genre | Theses |
|---|---|
| Genre | Text |
Bibliographic information
| Statement of responsibility | Lauren Riddiford. |
|---|---|
| Note | Submitted to the Department of Applied Physics. |
| Thesis | Thesis Ph.D. Stanford University 2022. |
| Location | https://purl.stanford.edu/bs384bg2053 |
Access conditions
- Copyright
- © 2022 by Lauren Jane Riddiford
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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