Novel transport regimes in graphene
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018.
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Thesis |
| Language: | eng |
| Published: |
Massachusetts Institute of Technology
2019
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/1721.1/119930 |
| _version_ | 1811075514052378624 |
|---|---|
| author | Kong, Jian Feng |
| author2 | Leonid Levitov. |
| author_facet | Leonid Levitov. Kong, Jian Feng |
| author_sort | Kong, Jian Feng |
| collection | MIT |
| description | Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018. |
| first_indexed | 2024-09-23T10:07:29Z |
| format | Thesis |
| id | mit-1721.1/119930 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T10:07:29Z |
| publishDate | 2019 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/1199302019-04-10T22:01:41Z Novel transport regimes in graphene Kong, Jian Feng Leonid Levitov. Massachusetts Institute of Technology. Department of Physics. Massachusetts Institute of Technology. Department of Physics. Physics. Thesis: Ph. D., Massachusetts Institute of Technology, Department of Physics, 2018. Cataloged from PDF version of thesis. Includes bibliographical references (pages 121-130). Transport phenomena in solids -- such as energy and charge flows in response to external fields -- is a subject of fundamental interest for solid state physics. Carrier transport exhibits a wide variety of intriguing and potentially useful behaviors arising due to a rich and complex interplay between electron-disorder, electron-electron, and electron-phonon interactions. Graphene, a newly discovered carbon one-atom-thick material, has unique transport characteristics, some of which are already well understood, whereas some are being under investigation or are waiting to be discovered. The two-dimensional character and exceptional cleanness of graphene, as well as gate tunability of the carrier density and electron-electron interactions, make graphene an excellent platform to study a range of new transport regimes, such as quantum-coherent ballistic transport, electron hydrodynamics and energy dissipation at the atomic scale. We will study ballistic transport in the context of electronic lensing. We will also demonstrate that electron-electron scattering alters ballistic transport in a dramatic way, giving rise to hole backflows and "memory effects", and leading to experimental signatures such as negative non-local resistance. Upon further increase of the electron-electron interaction strength, the system enters the hydrodynamic regime, where a host of new phenomena can emerge. We also show that the electron-disorder interactions have important implications for energy transport, with energy dissipation occurring predominantly at atomic-scale defects. In this thesis, we will provide a detailed discussion of these topics and their connection to the ongoing experiments. by Jian Feng Kong. Ph. D. 2019-01-11T16:03:19Z 2019-01-11T16:03:19Z 2018 2018 Thesis http://hdl.handle.net/1721.1/119930 1079895595 eng MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission. http://dspace.mit.edu/handle/1721.1/7582 130 pages application/pdf Massachusetts Institute of Technology |
| spellingShingle | Physics. Kong, Jian Feng Novel transport regimes in graphene |
| title | Novel transport regimes in graphene |
| title_full | Novel transport regimes in graphene |
| title_fullStr | Novel transport regimes in graphene |
| title_full_unstemmed | Novel transport regimes in graphene |
| title_short | Novel transport regimes in graphene |
| title_sort | novel transport regimes in graphene |
| topic | Physics. |
| url | http://hdl.handle.net/1721.1/119930 |
| work_keys_str_mv | AT kongjianfeng noveltransportregimesingraphene |